Common Weakness Enumeration

CWE-22

Weakness Allowed-with-Review

Improper Limitation of a Pathname to a Restricted Directory

Abstraction: Base · Status: Stable

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Many file operations are intended to take place within a restricted directory. By using special elements such as ".." and "/" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the "../" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as "/usr/local/bin" to access unexpected files. This is referred to as absolute path traversal.

Mapping guidance

This CWE entry might have children that would be more appropriate.

Examine children of this entry to see if there is a better fit. Consider children such as CWE-23 (or its descendants) for relative path traversal, or CWE-36 for absolute path traversal.

Relationships and members
ChildOf: CWE-706 · View CWE-1000
ChildOf: CWE-706 · View CWE-1003
CanPrecede: CWE-668 · View CWE-1000
Modes of introduction
Implementation
Detection methods

Automated Static Analysis

Automated techniques can find areas where path traversal weaknesses exist. However, tuning or customization may be required to remove or de-prioritize path-traversal problems that are only exploitable by the product's administrator - or other privileged users - and thus potentially valid behavior or, at worst, a bug instead of a vulnerability.

Effectiveness: High

Manual Static Analysis

Manual white box techniques may be able to provide sufficient code coverage and reduction of false positives if all file access operations can be assessed within limited time constraints.

Effectiveness: High

Automated Static Analysis - Binary or Bytecode

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Bytecode Weakness Analysis - including disassembler + source code weakness analysis

Cost effective for partial coverage:

Binary Weakness Analysis - including disassembler + source code weakness analysis

Effectiveness: High

Manual Static Analysis - Binary or Bytecode

According to SOAR [REF-1479], the following detection techniques may be useful:

Cost effective for partial coverage:

Binary / Bytecode disassembler - then use manual analysis for vulnerabilities & anomalies

Effectiveness: SOAR Partial

Dynamic Analysis with Automated Results Interpretation

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Web Application Scanner

Web Services Scanner

Database Scanners

Effectiveness: High

Dynamic Analysis with Manual Results Interpretation

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Fuzz Tester

Framework-based Fuzzer

Effectiveness: High

Manual Static Analysis - Source Code

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Manual Source Code Review (not inspections)

Cost effective for partial coverage:

Focused Manual Spotcheck - Focused manual analysis of source

Effectiveness: High

Automated Static Analysis - Source Code

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Source code Weakness Analyzer

Context-configured Source Code Weakness Analyzer

Effectiveness: High

Architecture or Design Review

According to SOAR [REF-1479], the following detection techniques may be useful:

Highly cost effective:

Formal Methods / Correct-By-Construction

Cost effective for partial coverage:

Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.)

Effectiveness: High

Notes

Other

In many programming languages, the injection of a null byte (the 0 or NUL) may allow an attacker to truncate a generated filename to apply to a wider range of files. For example, the product may add ".txt" to any pathname, thus limiting the attacker to text files, but a null injection may effectively remove this restriction.

Relationship

Pathname equivalence can be regarded as a type of canonicalization error.

Relationship

Some pathname equivalence issues are not directly related to directory traversal, rather are used to bypass security-relevant checks for whether a file/directory can be accessed by the attacker (e.g. a trailing "/" on a filename could bypass access rules that don't expect a trailing /, causing a server to provide the file when it normally would not).

Terminology

Like other weaknesses, terminology is often based on the types of manipulations used, instead of the underlying weaknesses. Some people use "directory traversal" only to refer to the injection of ".." and equivalent sequences whose specific meaning is to traverse directories.

Other variants like "absolute pathname" and "drive letter" have the *effect* of directory traversal, but some people may not call it such, since it doesn't involve ".." or equivalent.

Research Gap

Many variants of path traversal attacks are probably under-studied with respect to root cause. CWE-790 and CWE-182 begin to cover part of this gap.

Research Gap

Incomplete diagnosis or reporting of vulnerabilities can make it difficult to know which variant is affected. For example, a researcher might say that "..\" is vulnerable, but not test "../" which may also be vulnerable.

Any combination of directory separators ("/", "\", etc.) and numbers of "." (e.g. "....") can produce unique variants; for example, the "//../" variant is not listed (CVE-2004-0325). See this entry's children and lower-level descendants.

Content history
Submission: PLOVER · 2006-07-19 · CWE Draft 3
Contribution: Nick Johnston · 2022-07-11 · CWE 4.9

Identified weakness in Perl demonstrative example

Contribution: Abhi Balakrishnan · 2024-02-29 · CWE 4.15

Provided diagram to improve CWE usability

Contribution: Drew Buttner · MITRE · 2024-11-01 · CWE 4.16

Identified weakness in "good code" for Python demonstrative example

Contribution: Affan Ahmed · 2025-02-08 · CWE 4.20

Provided a demonstrative example in PHP

Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Potential_Mitigations, Time_of_Introduction

Modification: · Veracode · 2008-08-15 · CWE 1.0

Suggested OWASP Top Ten 2004 mapping

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Alternate_Terms, Relationships, Other_Notes, Relationship_Notes, Relevant_Properties, Taxonomy_Mappings, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2008-10-14 · CWE 1.0.1

updated Description

Modification: CWE Content Team · MITRE · 2008-11-24 · CWE 1.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2009-07-27 · CWE 1.5

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-02-16 · CWE 1.8

updated Alternate_Terms, Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Description, Detection_Factors, Likelihood_of_Exploit, Name, Observed_Examples, Other_Notes, Potential_Mitigations, References, Related_Attack_Patterns, Relationship_Notes, Relationships, Research_Gaps, Taxonomy_Mappings, Terminology_Notes, Time_of_Introduction, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2010-06-21 · CWE 1.9

updated Common_Consequences, Demonstrative_Examples, Description, Detection_Factors, Potential_Mitigations, References, Relationships

Modification: CWE Content Team · MITRE · 2010-09-27 · CWE 1.10

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-12-13 · CWE 1.11

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-03-29 · CWE 1.12

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-06-27 · CWE 2.0

updated Relationships

Modification: CWE Content Team · MITRE · 2011-09-13 · CWE 2.1

updated Potential_Mitigations, References, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Demonstrative_Examples, References, Relationships

Modification: CWE Content Team · MITRE · 2012-10-30 · CWE 2.3

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2013-02-21 · CWE 2.4

updated Observed_Examples

Modification: CWE Content Team · MITRE · 2013-07-17 · CWE 2.5

updated Related_Attack_Patterns, Relationships

Modification: CWE Content Team · MITRE · 2014-06-23 · CWE 2.7

updated Other_Notes, Research_Gaps

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Detection_Factors, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2015-12-07 · CWE 2.9

updated Relationships

Modification: CWE Content Team · MITRE · 2017-01-19 · CWE 2.10

updated Related_Attack_Patterns

Modification: CWE Content Team · MITRE · 2017-05-03 · CWE 2.11

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Affected_Resources, Causal_Nature, Likelihood_of_Exploit, References, Relationships, Relevant_Properties, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2018-03-27 · CWE 3.1

updated References, Relationships

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated References, Related_Attack_Patterns, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-06-20 · CWE 3.3

updated Related_Attack_Patterns, Relationships, Type

Modification: CWE Content Team · MITRE · 2019-09-19 · CWE 3.4

updated Relationships

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2020-06-25 · CWE 4.1

updated Demonstrative_Examples, Potential_Mitigations

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2020-12-10 · CWE 4.3

updated Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2021-03-15 · CWE 4.4

updated Demonstrative_Examples, Relationships

Modification: CWE Content Team · MITRE · 2021-07-20 · CWE 4.5

updated Relationships

Modification: CWE Content Team · MITRE · 2021-10-28 · CWE 4.6

updated Observed_Examples, Relationships

Modification: CWE Content Team · MITRE · 2022-06-28 · CWE 4.8

updated Observed_Examples, Relationships

Modification: CWE Content Team · MITRE · 2022-10-13 · CWE 4.9

updated Observed_Examples, References

Modification: CWE Content Team · MITRE · 2023-01-31 · CWE 4.10

updated Common_Consequences, Description, Detection_Factors

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Demonstrative_Examples, References, Relationships, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes, Relationships

Modification: CWE Content Team · MITRE · 2023-10-26 · CWE 4.13

updated Observed_Examples

Modification: CWE Content Team · MITRE · 2024-07-16 · CWE 4.15

updated Common_Consequences, Description, Diagram, Observed_Examples, Other_Notes, References

Modification: CWE Content Team · MITRE · 2024-11-19 · CWE 4.16

updated Demonstrative_Examples, Relationships

Modification: CWE Content Team · MITRE · 2025-04-03 · CWE 4.17

updated Relationships

Modification: CWE Content Team · MITRE · 2025-09-09 · CWE 4.18

updated Applicable_Platforms, Detection_Factors, Observed_Examples, Potential_Mitigations, References

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Mapping_Notes, Relationships

Modification: CWE Content Team · MITRE · 2026-04-30 · CWE 4.20

updated Alternate_Terms, Applicable_Platforms, Demonstrative_Examples, Relationships

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Applicable_Platforms, Common_Consequences, Name, References, Relationships, Taxonomy_Mappings

16048 vulnerabilities reference this CWE, most recent first.

GHSA-MCX7-CGPM-84C8

Vulnerability from github – Published: 2026-09-26 15:31 – Updated: 2026-09-26 15:31
VLAI
Details

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the exportBrowserHTML endpoint that allows authenticated administrators to write arbitrary HTML content to index.html outside the workspace directory. Attackers can supply a folder parameter with directory traversal sequences to escape the export directory and overwrite index.html in any pre-existing kernel-writable location, enabling stored XSS or workspace defacement.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-100636"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-26T14:16:45Z",
    "severity": "HIGH"
  },
  "details": "SiYuan versions before v3.8.4 contain a path traversal vulnerability in the exportBrowserHTML endpoint that allows authenticated administrators to write arbitrary HTML content to index.html outside the workspace directory. Attackers can supply a folder parameter with directory traversal sequences to escape the export directory and overwrite index.html in any pre-existing kernel-writable location, enabling stored XSS or workspace defacement.",
  "id": "GHSA-mcx7-cgpm-84c8",
  "modified": "2026-09-26T15:31:17Z",
  "published": "2026-09-26T15:31:17Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jf98-m24w-gm9m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100636"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/siyuan-before-3.8.4-path-traversal-via-exportbrowserhtml-folder"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-MCXV-5829-XP99

Vulnerability from github – Published: 2026-09-14 21:31 – Updated: 2026-09-16 15:30
VLAI
Details

A permissions issue was addressed with improved path validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An application may be able to access restricted files.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-86910"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T21:17:41Z",
    "severity": "MODERATE"
  },
  "details": "A permissions issue was addressed with improved path validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An application may be able to access restricted files.",
  "id": "GHSA-mcxv-5829-xp99",
  "modified": "2026-09-16T15:30:48Z",
  "published": "2026-09-14T21:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86910"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/149035"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/149042"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/149043"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-MCXW-XMPC-RM88

Vulnerability from github – Published: 2026-04-27 18:32 – Updated: 2026-04-27 18:32
VLAI
Details

ProjeQtor versions 7.0 through 12.4.3 contain a ZipSlip path traversal vulnerability in the plugin upload functionality that allows authenticated attackers with upload permissions to write files outside the intended extraction directory by crafting ZIP archives with directory traversal sequences. Attackers can exploit unvalidated archive extraction to write a PHP webshell to a web-accessible directory and achieve remote code execution with the privileges of the web server process.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-41463"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-27T16:16:45Z",
    "severity": "HIGH"
  },
  "details": "ProjeQtor versions 7.0 through 12.4.3 contain a ZipSlip path traversal vulnerability in the plugin upload functionality that allows authenticated attackers with upload permissions to write files outside the intended extraction directory by crafting ZIP archives with directory traversal sequences. Attackers can exploit unvalidated archive extraction to write a PHP webshell to a web-accessible directory and achieve remote code execution with the privileges of the web server process.",
  "id": "GHSA-mcxw-xmpc-rm88",
  "modified": "2026-04-27T18:32:07Z",
  "published": "2026-04-27T18:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41463"
    },
    {
      "type": "WEB",
      "url": "https://damiri.fr/en/cves/CVE-2026-41463"
    },
    {
      "type": "WEB",
      "url": "https://gryfman.fr/cves/CVE-2026-41463"
    },
    {
      "type": "WEB",
      "url": "https://www.projeqtor.com"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/projeqtor-zipslip-path-traversal-via-uploadplugin-php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-MF2X-XXXP-76GW

Vulnerability from github – Published: 2025-12-10 18:30 – Updated: 2025-12-23 15:30
VLAI
Details

Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting service in which an unauthenticated attacker can invoke a method vulnerable to path traversal to read arbitrary files. This vulnerability can be escalated to remote code execution by retrieving the .NET machine keys.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-34395"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-10T16:16:24Z",
    "severity": "HIGH"
  },
  "details": "Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, exposes a .NET Remoting service in which an unauthenticated attacker can invoke a method vulnerable to path traversal to read arbitrary files. This vulnerability can be escalated to remote code execution by retrieving the .NET machine keys.",
  "id": "GHSA-mf2x-xxxp-76gw",
  "modified": "2025-12-23T15:30:29Z",
  "published": "2025-12-10T18:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-34395"
    },
    {
      "type": "WEB",
      "url": "https://download.mw-rmm.barracudamsp.com/PDF/2025.1.1/RN_BRMM_2025.1.1_EN.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.barracuda.com/products/msp/network-protection/rmm"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/barracuda-rmm-service-center-net-remoting-path-traversal-rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-MF33-GV72-W2H5

Vulnerability from github – Published: 2026-05-18 17:50 – Updated: 2026-06-09 10:50
VLAI
Summary
CloakBrowser: Unauthenticated path traversal via fingerprint parameter in cloakserve leads to arbitrary directory deletion
Details

The cloakserve CDP multiplexer uses the user-supplied fingerprint query parameter directly as a filesystem path component when creating Chrome profile directories. An unauthenticated attacker who can reach the cloakserve port can supply a crafted fingerprint value containing path traversal sequences to resolve user_data_dir outside the configured data_dir. When Chrome fails to start or the process is cleaned up, shutil.rmtree() deletes the traversed path, resulting in arbitrary directory deletion.

Additionally, cloakserve bound to 0.0.0.0 by default, making it network-exposed.

Impact

An attacker with network access to the cloakserve port can delete arbitrary directories accessible to the service user.

Patches

Fixed in v0.3.28.

Mitigations

  • Upgrade to v0.3.28 or later
  • Restrict network access to the cloakserve port
Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.3.27"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "cloakbrowser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.28"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45727"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T17:50:21Z",
    "nvd_published_at": "2026-06-01T19:16:53Z",
    "severity": "HIGH"
  },
  "details": "The `cloakserve` CDP multiplexer uses the user-supplied `fingerprint` query parameter directly as a filesystem path component when creating Chrome profile directories. An unauthenticated attacker who can reach the cloakserve port can supply a crafted `fingerprint` value containing path traversal sequences to resolve `user_data_dir` outside the configured `data_dir`. When Chrome fails to start or the process is cleaned up, `shutil.rmtree()` deletes the traversed path, resulting in arbitrary directory deletion.\n\nAdditionally, `cloakserve` bound to `0.0.0.0` by default, making it network-exposed.\n\n### Impact\n\nAn attacker with network access to the cloakserve port can delete arbitrary directories accessible to the service user.\n\n### Patches\n\nFixed in v0.3.28.\n\n### Mitigations\n\n- Upgrade to v0.3.28 or later\n- Restrict network access to the cloakserve port",
  "id": "GHSA-mf33-gv72-w2h5",
  "modified": "2026-06-09T10:50:57Z",
  "published": "2026-05-18T17:50:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/CloakHQ/CloakBrowser/security/advisories/GHSA-mf33-gv72-w2h5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45727"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/CloakHQ/CloakBrowser"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CloakBrowser: Unauthenticated path traversal via fingerprint parameter in cloakserve leads to arbitrary directory deletion"
}

GHSA-MF5C-HW34-4HPP

Vulnerability from github – Published: 2026-08-28 16:27 – Updated: 2026-08-28 16:27
VLAI
Summary
Aqua's archive extraction follows attacker-planted symlinks, allowing writes outside the install directory
Details

Summary

aquaproj/aqua extracts downloaded tool archives through pkg/unarchive/archives.go using github.com/mholt/archives. The archive handler creates symlink entries with os.Symlink(f.LinkTarget, dstPath) without validating that the symlink target resolves inside the extraction destination. A subsequent regular-file archive entry with the same path is opened with OpenFile(dstPath, O_CREATE|O_WRONLY), which follows the attacker-planted symlink.

A malicious or compromised aqua package / release asset can therefore write attacker-controlled bytes outside aqua's extraction directory, with the privileges of the user running aqua.

Details

Affected file: pkg/unarchive/archives.go

Affected function: (*handler).HandleFile

The vulnerable logic is the combination of:

os.Symlink(f.LinkTarget, dstPath)

for symlink entries, followed by:

h.fs.OpenFile(dstPath, os.O_CREATE|os.O_WRONLY, f.Mode())

for a later regular file entry at the same archive path. The symlink target is not jailed to the extraction destination, and the later file open follows the symlink.

The attached PoC uses a two-entry tar.gz archive:

  1. symlink pwn -> <outside target>;
  2. regular file pwn containing attacker-controlled bytes.

The same mholt/archives extraction flow is used for the vulnerable handler and for a negative-control handler using a destination-root jail.

PoC

Attachment: submission_aqua_archive_symlink_traversal_v2_final.zip

Run:

go run mkarchive.go /tmp/aqua-outside-target
go build -o aqua-archive-poc .
mkdir -p /tmp/aqua-dest
./aqua-archive-poc vuln /tmp/aqua-dest malicious.tar.gz
cat /tmp/aqua-outside-target

mkdir -p /tmp/aqua-dest-safe
./aqua-archive-poc safe /tmp/aqua-dest-safe malicious.tar.gz

Expected vulnerable result:

/tmp/aqua-outside-target contains PWNED_BY_AQUA_SYMLINK_TRAVERSAL

Expected safe-control result:

The escaping symlink / write is rejected and the outside target is unchanged.

Impact

An attacker who controls an archive that aqua installs can write attacker-controlled content to paths outside the extraction destination, limited by the filesystem permissions of the user running aqua. This can lead to user-level code execution if the overwritten path is later executed or interpreted, for example a shell startup file, a tool configuration file, or a writable PATH entry.

This report does not claim privilege escalation beyond the aqua process privileges.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/aquaproj/aqua/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.60.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55569"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-28T16:27:08Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\n`aquaproj/aqua` extracts downloaded tool archives through `pkg/unarchive/archives.go` using `github.com/mholt/archives`. The archive handler creates symlink entries with `os.Symlink(f.LinkTarget, dstPath)` without validating that the symlink target resolves inside the extraction destination. A subsequent regular-file archive entry with the same path is opened with `OpenFile(dstPath, O_CREATE|O_WRONLY)`, which follows the attacker-planted symlink.\n\nA malicious or compromised aqua package / release asset can therefore write attacker-controlled bytes outside aqua\u0027s extraction directory, with the privileges of the user running aqua.\n\n### Details\n\nAffected file: `pkg/unarchive/archives.go`\n\nAffected function: `(*handler).HandleFile`\n\nThe vulnerable logic is the combination of:\n\n```go\nos.Symlink(f.LinkTarget, dstPath)\n```\n\nfor symlink entries, followed by:\n\n```go\nh.fs.OpenFile(dstPath, os.O_CREATE|os.O_WRONLY, f.Mode())\n```\n\nfor a later regular file entry at the same archive path. The symlink target is not jailed to the extraction destination, and the later file open follows the symlink.\n\nThe attached PoC uses a two-entry `tar.gz` archive:\n\n1. symlink `pwn -\u003e \u003coutside target\u003e`;\n2. regular file `pwn` containing attacker-controlled bytes.\n\nThe same `mholt/archives` extraction flow is used for the vulnerable handler and for a negative-control handler using a destination-root jail.\n\n### PoC\n\nAttachment: `submission_aqua_archive_symlink_traversal_v2_final.zip`\n\nRun:\n\n```bash\ngo run mkarchive.go /tmp/aqua-outside-target\ngo build -o aqua-archive-poc .\nmkdir -p /tmp/aqua-dest\n./aqua-archive-poc vuln /tmp/aqua-dest malicious.tar.gz\ncat /tmp/aqua-outside-target\n\nmkdir -p /tmp/aqua-dest-safe\n./aqua-archive-poc safe /tmp/aqua-dest-safe malicious.tar.gz\n```\n\nExpected vulnerable result:\n\n```text\n/tmp/aqua-outside-target contains PWNED_BY_AQUA_SYMLINK_TRAVERSAL\n```\n\nExpected safe-control result:\n\n```text\nThe escaping symlink / write is rejected and the outside target is unchanged.\n```\n\n### Impact\n\nAn attacker who controls an archive that aqua installs can write attacker-controlled content to paths outside the extraction destination, limited by the filesystem permissions of the user running aqua. This can lead to user-level code execution if the overwritten path is later executed or interpreted, for example a shell startup file, a tool configuration file, or a writable PATH entry.\n\nThis report does not claim privilege escalation beyond the aqua process privileges.",
  "id": "GHSA-mf5c-hw34-4hpp",
  "modified": "2026-08-28T16:27:08Z",
  "published": "2026-08-28T16:27:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aquaproj/aqua/security/advisories/GHSA-mf5c-hw34-4hpp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aquaproj/aqua/commit/d5b02b220188de376a661b3aabfa912202a1a59a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/aquaproj/aqua"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aquaproj/aqua/releases/tag/v2.60.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Aqua\u0027s archive extraction follows attacker-planted symlinks, allowing writes outside the install directory"
}

GHSA-MF5W-J54P-PXMP

Vulnerability from github – Published: 2022-05-17 05:29 – Updated: 2022-05-17 05:29
VLAI
Details

Directory traversal vulnerability in the captcha module in Pligg CMS before 1.2.2 allows remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the captcha parameter to module.php, as demonstrated by cross-site request forgery (CSRF) attacks.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2012-2435"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2012-05-27T20:55:00Z",
    "severity": "MODERATE"
  },
  "details": "Directory traversal vulnerability in the captcha module in Pligg CMS before 1.2.2 allows remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the captcha parameter to module.php, as demonstrated by cross-site request forgery (CSRF) attacks.",
  "id": "GHSA-mf5w-j54p-pxmp",
  "modified": "2022-05-17T05:29:02Z",
  "published": "2022-05-17T05:29:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-2435"
    },
    {
      "type": "WEB",
      "url": "https://www.htbridge.com/advisory/HTB23089"
    },
    {
      "type": "WEB",
      "url": "http://forums.pligg.com/downloads.php?do=file\u0026id=15"
    },
    {
      "type": "WEB",
      "url": "http://pligg.svn.sourceforge.net/viewvc/pligg?view=revision\u0026revision=2440"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-MF6P-MRQ3-GVPC

Vulnerability from github – Published: 2022-05-01 18:40 – Updated: 2022-05-01 18:40
VLAI
Details

Directory traversal vulnerability in users/files.php in Eurologon CMS allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter in a download action, as demonstrated by a certain PHP file containing database credentials.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2007-6185"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2007-11-30T00:46:00Z",
    "severity": "HIGH"
  },
  "details": "Directory traversal vulnerability in users/files.php in Eurologon CMS allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter in a download action, as demonstrated by a certain PHP file containing database credentials.",
  "id": "GHSA-mf6p-mrq3-gvpc",
  "modified": "2022-05-01T18:40:21Z",
  "published": "2022-05-01T18:40:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2007-6185"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/38659"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/4666"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/39685"
    },
    {
      "type": "WEB",
      "url": "http://securityreason.com/securityalert/3408"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/archive/1/484268/100/0/threaded"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/26600"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-MF6V-QV54-R9QJ

Vulnerability from github – Published: 2026-05-20 06:31 – Updated: 2026-05-20 06:31
VLAI
Details

NVIDIA Triton Inference Server contains a vulnerability where an attacker could cause a path traversal issue. A successful exploit of this vulnerability might lead to denial of service.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-24209"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-20T04:16:46Z",
    "severity": "HIGH"
  },
  "details": "NVIDIA Triton Inference Server contains a vulnerability where an attacker could cause a path traversal issue. A successful exploit of this vulnerability might lead to denial of service.",
  "id": "GHSA-mf6v-qv54-r9qj",
  "modified": "2026-05-20T06:31:52Z",
  "published": "2026-05-20T06:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24209"
    },
    {
      "type": "WEB",
      "url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5828"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-24209"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-MF78-3RPF-R784

Vulnerability from github – Published: 2026-07-14 20:19 – Updated: 2026-07-14 20:19
VLAI
Summary
Anyquery: Local File Read (LFR) via Unrestricted SQLite Virtual Table Modules in Server Mode
Details

Summary

Anyquery's server mode lacks input sanitization and access control over its built-in SQLite virtual table modules (e.g., csv_reader, log_reader). Unauthenticated attackers connecting to the MySQL-compatible server port can create virtual tables pointing to local files on the system (e.g., /etc/passwd, ~/.ssh/id_rsa). This allows full Local File Read (LFR) capabilities, compromising sensitive system configurations and credentials.

Details

Anyquery utilizes the hashicorp/go-getter library within its data ingestion modules. When Anyquery is launched in Server Mode (anyquery server), it binds to a TCP port and accepts MySQL protocol connections. The server handler does not restrict the usage of these virtual table modules to safe directories. An attacker can connect to the server and execute native SQLite virtual table creation queries to instantiate modules like csv_reader pointing to restricted files. Because the file read operation is initiated by the Anyquery server process, the attacker can read any file the process has access to.

PoC (Proof of Concept)

  1. Start the server on the victim machine: bash anyquery server --host 0.0.0.0 --port 8070
  2. Connect from an attacker machine: bash mysql -u root -h <VICTIM_IP> -P 8070
  3. Execute the following payload to read /etc/passwd: sql CREATE VIRTUAL TABLE passwd USING csv_reader('/etc/passwd'); SELECT * FROM passwd;

Impact

  • Confidentiality: High. Complete compromise of local file system confidentiality.
  • Integrity: None.
  • Availability: None.
  • CVSS Score: 7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Remediation

Implement a sandboxing mechanism in Server Mode (e.g., a --restrict-paths flag) to limit read_* operations to designated directories.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 0.4.5"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/julien040/anyquery"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54629"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-284",
      "CWE-552",
      "CWE-73",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-14T20:19:07Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\nAnyquery\u0027s `server` mode lacks input sanitization and access control over its built-in SQLite virtual table modules (e.g., `csv_reader`, `log_reader`). Unauthenticated attackers connecting to the MySQL-compatible server port can create virtual tables pointing to local files on the system (e.g., `/etc/passwd`, `~/.ssh/id_rsa`). This allows full Local File Read (LFR) capabilities, compromising sensitive system configurations and credentials.\n\n## Details\nAnyquery utilizes the `hashicorp/go-getter` library within its data ingestion modules. When Anyquery is launched in **Server Mode** (`anyquery server`), it binds to a TCP port and accepts MySQL protocol connections. The server handler does not restrict the usage of these virtual table modules to safe directories. An attacker can connect to the server and execute native SQLite virtual table creation queries to instantiate modules like `csv_reader` pointing to restricted files. Because the file read operation is initiated by the Anyquery server process, the attacker can read any file the process has access to.\n\n## PoC (Proof of Concept)\n1. Start the server on the victim machine:\n   ```bash\n   anyquery server --host 0.0.0.0 --port 8070\n   ```\n2. Connect from an attacker machine:\n   ```bash\n   mysql -u root -h \u003cVICTIM_IP\u003e -P 8070\n   ```\n3. Execute the following payload to read `/etc/passwd`:\n   ```sql\n   CREATE VIRTUAL TABLE passwd USING csv_reader(\u0027/etc/passwd\u0027);\n   SELECT * FROM passwd;\n   ```\n\n## Impact\n- **Confidentiality:** High. Complete compromise of local file system confidentiality.\n- **Integrity:** None.\n- **Availability:** None.\n- **CVSS Score:** 7.5 (High) - `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`\n\n## Remediation\nImplement a sandboxing mechanism in Server Mode (e.g., a `--restrict-paths` flag) to limit `read_*` operations to designated directories.",
  "id": "GHSA-mf78-3rpf-r784",
  "modified": "2026-07-14T20:19:07Z",
  "published": "2026-07-14T20:19:07Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/julien040/anyquery/security/advisories/GHSA-mf78-3rpf-r784"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/julien040/anyquery"
    },
    {
      "type": "WEB",
      "url": "https://github.com/julien040/anyquery/releases/tag/0.4.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Anyquery: Local File Read (LFR) via Unrestricted SQLite Virtual Table Modules in Server Mode"
}

Mitigation MIT-5.1
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • When validating filenames, use stringent allowlists that limit the character set to be used. If feasible, only allow a single "." character in the filename to avoid weaknesses such as CWE-23, and exclude directory separators such as "/" to avoid CWE-36. Use a list of allowable file extensions, which will help to avoid CWE-434.
  • Do not rely exclusively on a filtering mechanism that removes potentially dangerous characters. This is equivalent to a denylist, which may be incomplete (CWE-184). For example, filtering "/" is insufficient protection if the filesystem also supports the use of "\" as a directory separator. Another possible error could occur when the filtering is applied in a way that still produces dangerous data (CWE-182). For example, if "../" sequences are removed from the ".../...//" string in a sequential fashion, two instances of "../" would be removed from the original string, but the remaining characters would still form the "../" string.
Mitigation MIT-15
Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation MIT-20.1
Implementation

Strategy: Input Validation

  • Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
  • Use a built-in path canonicalization function (such as realpath() in C) that produces the canonical version of the pathname, which effectively removes ".." sequences and symbolic links (CWE-23, CWE-59). This includes:
  • realpath() in C
  • getCanonicalPath() in Java
  • GetFullPath() in ASP.NET
  • realpath() or abs_path() in Perl
  • realpath() in PHP
Mitigation MIT-4
Architecture and Design

Strategy: Libraries or Frameworks

Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].

Mitigation MIT-29
Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

Mitigation MIT-17
Architecture and Design Operation

Strategy: Environment Hardening

Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.

Mitigation MIT-21.1
Architecture and Design

Strategy: Enforcement by Conversion

  • When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
  • For example, ID 1 could map to "inbox.txt" and ID 2 could map to "profile.txt". Features such as the ESAPI AccessReferenceMap [REF-185] provide this capability.
Mitigation MIT-22
Architecture and Design Operation

Strategy: Sandbox or Jail

  • Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation MIT-34
Architecture and Design Operation

Strategy: Attack Surface Reduction

  • Store library, include, and utility files outside of the web document root, if possible. Otherwise, store them in a separate directory and use the web server's access control capabilities to prevent attackers from directly requesting them. One common practice is to define a fixed constant in each calling program, then check for the existence of the constant in the library/include file; if the constant does not exist, then the file was directly requested, and it can exit immediately.
  • This significantly reduces the chance of an attacker being able to bypass any protection mechanisms that are in the base program but not in the include files. It will also reduce the attack surface.
Mitigation MIT-39
Implementation
  • Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
  • If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
  • Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
  • In the context of path traversal, error messages which disclose path information can help attackers craft the appropriate attack strings to move through the file system hierarchy.
Mitigation MIT-16
Operation Implementation

Strategy: Environment Hardening

When using PHP, configure the application so that it does not use register_globals. During implementation, develop the application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.

CAPEC-126: Path Traversal

An adversary uses path manipulation methods to exploit insufficient input validation of a target to obtain access to data that should be not be retrievable by ordinary well-formed requests. A typical variety of this attack involves specifying a path to a desired file together with dot-dot-slash characters, resulting in the file access API or function traversing out of the intended directory structure and into the root file system. By replacing or modifying the expected path information the access function or API retrieves the file desired by the attacker. These attacks either involve the attacker providing a complete path to a targeted file or using control characters (e.g. path separators (/ or \) and/or dots (.)) to reach desired directories or files.

CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic

This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple ways of encoding a URL and abuse the interpretation of the URL. A URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.

CAPEC-76: Manipulating Web Input to File System Calls

An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

CAPEC-78: Using Escaped Slashes in Alternate Encoding

This attack targets the use of the backslash in alternate encoding. An adversary can provide a backslash as a leading character and causes a parser to believe that the next character is special. This is called an escape. By using that trick, the adversary tries to exploit alternate ways to encode the same character which leads to filter problems and opens avenues to attack.

CAPEC-79: Using Slashes in Alternate Encoding

This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.