Common Weakness Enumeration

CWE-59

Allowed

Improper Link Resolution Before File Access ('Link Following')

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

2001 vulnerabilities reference this CWE, most recent first.

GHSA-5368-6H4H-GR29

Vulnerability from github – Published: 2026-04-28 00:31 – Updated: 2026-05-06 19:05
VLAI
Summary
Spring Boot's PID file write follows symlinks at predictable default path
Details

When an application is configured to use ApplicationPidFileWriter, a local attacker with write access to the PID file's location can corrupt one file on the host each time the application is started.

Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); PID file / symlink behavior (ApplicationPidFileWriter). Versions that are no longer supported are also affected per vendor advisory.

Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.boot:spring-boot-cassandra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.boot:spring-boot-cassandra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.5.0"
            },
            {
              "fixed": "3.5.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.boot:spring-boot-cassandra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.4.0"
            },
            {
              "last_affected": "3.4.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.boot:spring-boot-cassandra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "last_affected": "3.3.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.boot:spring-boot-cassandra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.7.32"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40977"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T19:05:35Z",
    "nvd_published_at": "2026-04-28T00:16:24Z",
    "severity": "MODERATE"
  },
  "details": "When an application is configured to use `ApplicationPidFileWriter`, a local attacker with write access to the PID file\u0027s location can corrupt one file on the host each time the application is started.\n\nAffected: Spring Boot 4.0.0\u20134.0.5 (fix 4.0.6), 3.5.0\u20133.5.13 (fix 3.5.14), 3.4.0\u20133.4.15 (fix 3.4.16), 3.3.0\u20133.3.18 (fix 3.3.19), 2.7.0\u20132.7.32 (fix 2.7.33); PID file / symlink behavior (`ApplicationPidFileWriter`). Versions that are no longer supported are also affected per vendor advisory.",
  "id": "GHSA-5368-6h4h-gr29",
  "modified": "2026-05-06T19:05:35Z",
  "published": "2026-04-28T00:31:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40977"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/spring-projects/spring-boot"
    },
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-40977"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Spring Boot\u0027s PID file write follows symlinks at predictable default path"
}

GHSA-53CH-PXC8-6G72

Vulnerability from github – Published: 2026-06-29 15:32 – Updated: 2026-07-02 12:30
VLAI
Details

acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.

Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-54369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-29T14:16:57Z",
    "severity": "HIGH"
  },
  "details": "acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by replacing any pathname component with a symbolic link. Attackers who control any component of a pathname processed by a privileged caller can redirect ACL read or write operations to arbitrary files or directories, enabling unauthorized manipulation of access control lists and local privilege escalation.",
  "id": "GHSA-53ch-pxc8-6g72",
  "modified": "2026-07-02T12:30:58Z",
  "published": "2026-06-29T15:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54369"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:34351"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-54369"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2490277"
    },
    {
      "type": "WEB",
      "url": "https://cgit.git.savannah.nongnu.org/cgit/acl.git/commit/?id=24a227d0ab8576612194f8a56c2314389adc74a5"
    },
    {
      "type": "WEB",
      "url": "https://cgit.git.savannah.nongnu.org/cgit/acl.git/commit/?id=3589787cd589b34bdd9265936e17190b6d3f17d1"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54369.json"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/acl-symlink-traversal-privilege-escalation-via-libacl-functions"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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-53P9-M4MR-WP8X

Vulnerability from github – Published: 2022-05-24 17:06 – Updated: 2025-10-22 00:31
VLAI
Details

An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2020-0638"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269",
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-01-14T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka \u0027Update Notification Manager Elevation of Privilege Vulnerability\u0027.",
  "id": "GHSA-53p9-m4mr-wp8x",
  "modified": "2025-10-22T00:31:49Z",
  "published": "2022-05-24T17:06:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0638"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0638"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0638"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-53WM-97P6-582F

Vulnerability from github – Published: 2022-05-13 01:07 – Updated: 2026-06-05 17:53
VLAI
Summary
instack-undercloud vulnerable to symlink attack on tmp files
Details

A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.

Severity
6.4 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "instack-undercloud"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "7.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-7549"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-377",
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-04-22T22:48:23Z",
    "nvd_published_at": "2017-09-21T21:29:00Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.",
  "id": "GHSA-53wm-97p6-582f",
  "modified": "2026-06-05T17:53:43Z",
  "published": "2022-05-13T01:07:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7549"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2557"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2649"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2687"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2693"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:2726"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2017-7549"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1477403"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/instack/PYSEC-2017-152.yaml"
    },
    {
      "type": "WEB",
      "url": "https://opendev.org/openstack/instack-undercloud"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20170907040549/http://www.securityfocus.com/bid/100407"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/100407"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "instack-undercloud vulnerable to symlink attack on tmp files"
}

GHSA-548G-PCC5-4492

Vulnerability from github – Published: 2024-03-12 18:31 – Updated: 2024-03-12 18:31
VLAI
Details

Windows Update Stack Elevation of Privilege Vulnerability

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-21432"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-12T17:15:51Z",
    "severity": "HIGH"
  },
  "details": "Windows Update Stack Elevation of Privilege Vulnerability",
  "id": "GHSA-548g-pcc5-4492",
  "modified": "2024-03-12T18:31:13Z",
  "published": "2024-03-12T18:31:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21432"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21432"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-548J-7QQV-2MVF

Vulnerability from github – Published: 2022-05-17 01:07 – Updated: 2022-05-17 01:07
VLAI
Details

mktexlsr revision 36855, and before revision 36626 as packaged in texlive allows local users to write to arbitrary files via a symlink attack. NOTE: this vulnerability exists due to the reversion of a fix of CVE-2015-5700.

Severity
6.1 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2015-5701"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-08-25T18:29:00Z",
    "severity": "MODERATE"
  },
  "details": "mktexlsr revision 36855, and before revision 36626 as packaged in texlive allows local users to write to arbitrary files via a symlink attack.  NOTE: this vulnerability exists due to the reversion of a fix of CVE-2015-5700.",
  "id": "GHSA-548j-7qqv-2mvf",
  "modified": "2022-05-17T01:07:50Z",
  "published": "2022-05-17T01:07:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5701"
    },
    {
      "type": "WEB",
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775139"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1181167"
    },
    {
      "type": "WEB",
      "url": "https://www.tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?r1=19613\u0026r2=22885"
    },
    {
      "type": "WEB",
      "url": "https://www.tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?view=log"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2015/07/30/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-54R8-8CQ2-5P82

Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2022-07-03 00:00
VLAI
Details

A UNIX Symbolic Link (Symlink) Following vulnerability in the clone-master-clean-up.sh script of clone-master-clean-up in SUSE Linux Enterprise Server 12 SP3, SUSE Linux Enterprise Server 15 SP1; openSUSE Factory allows local attackers to delete arbitrary files. This issue affects: SUSE Linux Enterprise Server 12 SP3 clone-master-clean-up version 1.6-4.6.1 and prior versions. SUSE Linux Enterprise Server 15 SP1 clone-master-clean-up version 1.6-3.9.1 and prior versions. openSUSE Factory clone-master-clean-up version 1.6-1.4 and prior versions.

Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2021-32000"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59",
      "CWE-61"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-07-28T10:15:00Z",
    "severity": "HIGH"
  },
  "details": "A UNIX Symbolic Link (Symlink) Following vulnerability in the clone-master-clean-up.sh script of clone-master-clean-up in SUSE Linux Enterprise Server 12 SP3, SUSE Linux Enterprise Server 15 SP1; openSUSE Factory allows local attackers to delete arbitrary files.\nThis issue affects:\nSUSE Linux Enterprise Server 12 SP3\nclone-master-clean-up version 1.6-4.6.1 and prior versions.\nSUSE Linux Enterprise Server 15 SP1\nclone-master-clean-up version 1.6-3.9.1 and prior versions.\nopenSUSE Factory\nclone-master-clean-up version 1.6-1.4 and prior versions.",
  "id": "GHSA-54r8-8cq2-5p82",
  "modified": "2022-07-03T00:00:23Z",
  "published": "2022-05-24T19:09:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32000"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1181050"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-552W-74VW-6JF7

Vulnerability from github – Published: 2022-05-17 02:18 – Updated: 2022-05-17 02:18
VLAI
Details

filters/any-UTF8 in konwert 1.8 allows local users to delete arbitrary files via a symlink attack on a /tmp/any-##### temporary file.

Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2008-4964"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2008-11-06T15:55:00Z",
    "severity": "MODERATE"
  },
  "details": "filters/any-UTF8 in konwert 1.8 allows local users to delete arbitrary files via a symlink attack on a /tmp/any-##### temporary file.",
  "id": "GHSA-552w-74vw-6jf7",
  "modified": "2022-05-17T02:18:32Z",
  "published": "2022-05-17T02:18:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-4964"
    },
    {
      "type": "WEB",
      "url": "https://bugs.gentoo.org/show_bug.cgi?id=235770"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/44821"
    },
    {
      "type": "WEB",
      "url": "http://bugs.debian.org/496379"
    },
    {
      "type": "WEB",
      "url": "http://dev.gentoo.org/~rbu/security/debiantemp/konwert-filters"
    },
    {
      "type": "WEB",
      "url": "http://uvw.ru/report.lenny.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2008/10/30/2"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/30914"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-55GW-QCG5-XJRX

Vulnerability from github – Published: 2022-05-02 06:15 – Updated: 2025-04-11 03:31
VLAI
Details

client/mount.cifs.c in mount.cifs in smbfs in Samba 3.0.22, 3.0.28a, 3.2.3, 3.3.2, 3.4.0, and 3.4.5 allows local users to mount a CIFS share on an arbitrary mountpoint, and gain privileges, via a symlink attack on the mountpoint directory file.

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2010-0787"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2010-03-02T18:30:00Z",
    "severity": "MODERATE"
  },
  "details": "client/mount.cifs.c in mount.cifs in smbfs in Samba 3.0.22, 3.0.28a, 3.2.3, 3.3.2, 3.4.0, and 3.4.5 allows local users to mount a CIFS share on an arbitrary mountpoint, and gain privileges, via a symlink attack on the mountpoint directory file.",
  "id": "GHSA-55gw-qcg5-xjrx",
  "modified": "2025-04-11T03:31:56Z",
  "published": "2022-05-02T06:15:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0787"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=532940"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=558833"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.samba.org/show_bug.cgi?id=6853"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55944"
    },
    {
      "type": "WEB",
      "url": "http://git.samba.org/?p=samba.git%3Ba=commit%3Bh=3ae5dac462c4ed0fb2cd94553583c56fce2f9d80"
    },
    {
      "type": "WEB",
      "url": "http://git.samba.org/?p=samba.git%3Ba=commit%3Bh=a0c31ec1c8d1220a5884e40d9ba6b191a04a24d5"
    },
    {
      "type": "WEB",
      "url": "http://git.samba.org/?p=samba.git;a=commit;h=3ae5dac462c4ed0fb2cd94553583c56fce2f9d80"
    },
    {
      "type": "WEB",
      "url": "http://git.samba.org/?p=samba.git;a=commit;h=a0c31ec1c8d1220a5884e40d9ba6b191a04a24d5"
    },
    {
      "type": "WEB",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-January/034444.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-January/034470.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/38286"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/38308"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/38357"
    },
    {
      "type": "WEB",
      "url": "http://security.gentoo.org/glsa/glsa-201206-29.xml"
    },
    {
      "type": "WEB",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:090"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/37992"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/39898"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-893-1"
    },
    {
      "type": "WEB",
      "url": "http://www.vupen.com/english/advisories/2010/1062"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-55JH-FWMH-39M4

Vulnerability from github – Published: 2026-07-21 16:14 – Updated: 2026-07-21 16:14
VLAI
Summary
Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability
Details

Executive summary

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET SDK (Microsoft.NET.Build.Containers). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

A tampering vulnerability exists in the .NET SDK (.NET 8, .NET 9, and .NET 10) container image build process which could allow a local attacker to inject resources that could be incorporated into container images built by other users on the same machine.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/TBD

CVSS Details

  • Version: 3.1
  • Severity: High
  • Score: 7.0
  • Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Weakness: CWE-59 (Improper Link Resolution Before File Access ('Link Following'))

Affected Platforms

  • Platforms: All
  • Architectures: All

Affected Packages

The vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below

.NET 10.0

Package name Affected version Patched version
Microsoft.NET.Build.Containers >= 10.0.0, <= 10.0.9 10.0.10

.NET 9.0

Package name Affected version Patched version
Microsoft.NET.Build.Containers >= 9.0.0, <= 9.0.17 9.0.18

.NET 8.0

Package name Affected version Patched version
Microsoft.NET.Build.Containers >= 8.0.0, <= 8.0.28 8.0.29

Advisory FAQ

How do I know if I am affected?

If using a package listed in affected packages, you're exposed to the vulnerability.

How do I fix the issue?

  1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
  2. If your application references the vulnerable nuget package, update the package reference to the patched version. You can list the versions you have installed by running the dotnet --info command.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ.

Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2026-50526

Acknowledgements

Anonymous, Siwei Li with Microsoft

Revisions

V1.0 (July 14, 2026): Advisory published.

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.0.9"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.NET.Build.Containers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0"
            },
            {
              "fixed": "10.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 9.0.17"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.NET.Build.Containers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 8.0.28"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.NET.Build.Containers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.0.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50526"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-21T16:14:37Z",
    "nvd_published_at": "2026-07-14T20:17:37Z",
    "severity": "HIGH"
  },
  "details": "## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET SDK (Microsoft.NET.Build.Containers). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nA tampering vulnerability exists in the .NET SDK (.NET 8, .NET 9, and .NET 10) container image build process which could allow a local attacker to inject resources that could be incorporated into container images built by other users on the same machine.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 7.0\n- **Vector:** `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-59 (Improper Link Resolution Before File Access (\u0027Link Following\u0027))\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n## \u003ca name=\"affected-packages\"\u003e\u003c/a\u003eAffected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### \u003ca name=\".NET 10.0\"\u003e\u003c/a\u003e.NET 10.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NET.Build.Containers](https://www.nuget.org/packages/Microsoft.NET.Build.Containers)               | \u003e= 10.0.0, \u003c= 10.0.9 | 10.0.10\n\n### \u003ca name=\".NET 9.0\"\u003e\u003c/a\u003e.NET 9.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NET.Build.Containers](https://www.nuget.org/packages/Microsoft.NET.Build.Containers)               | \u003e= 9.0.0, \u003c= 9.0.17 | 9.0.18\n\n### \u003ca name=\".NET 8.0\"\u003e\u003c/a\u003e.NET 8.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NET.Build.Containers](https://www.nuget.org/packages/Microsoft.NET.Build.Containers)               | \u003e= 8.0.0, \u003c= 8.0.28 | 8.0.29\n\n## Advisory FAQ\n\n### \u003ca name=\"how-affected\"\u003e\u003c/a\u003eHow do I know if I am affected?\n\nIf using a package listed in [affected packages](#affected-packages), you\u0027re exposed to the vulnerability.\n\n### \u003ca name=\"how-fix\"\u003e\u003c/a\u003eHow do I fix the issue?\n\n1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.\n2. If your application references the vulnerable nuget package, update the package reference to the patched version. You can list the versions you have installed by running the `dotnet --info` command.\n\nOnce you have installed the updated runtime or SDK, restart your apps for the update to take effect.\n\nAdditionally, if you\u0027ve deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n## Other Information\n\n### Reporting Security Issues\n\nIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the [MSRC Researcher Portal](https://msrc.microsoft.com/report/vulnerability/new). Further information can be found in the MSRC [Report an Issue FAQ](https://www.microsoft.com/msrc/faqs-report-an-issue).\n\nSecurity reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.\n\n### Support\n\nYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.\n\n### Disclaimer\n\nThe information provided in this advisory is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.\n\n### External Links\n\n[CVE-2026-50526]( https://www.cve.org/CVERecord?id=CVE-2026-50526)\n\n### Acknowledgements\n\n**Anonymous, Siwei Li with Microsoft**\n\n### Revisions\n\nV1.0 (July 14, 2026): Advisory published.",
  "id": "GHSA-55jh-fwmh-39m4",
  "modified": "2026-07-21T16:14:37Z",
  "published": "2026-07-21T16:14:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/sdk/security/advisories/GHSA-55jh-fwmh-39m4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50526"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/announcements/issues/415"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/sdk/issues/55274"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dotnet/sdk"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50526"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Microsoft Security Advisory CVE-2026-50526 \u2013 .NET Tampering Vulnerability"
}
Mitigation MIT-48.1
Architecture and Design

Strategy: Separation of Privilege

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack

An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.

CAPEC-17: Using Malicious Files

An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.

CAPEC-35: Leverage Executable Code in Non-Executable Files

An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.

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.

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