CWE-352
Weakness AllowedCross-Site Request Forgery
Abstraction: Compound · Status: Stable
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
Mapping guidance
This is a well-known Composite of multiple weaknesses that must all occur simultaneously, although it is attack-oriented in nature.
While attack-oriented composites are supported in CWE, they have not been a focus of research. There is a chance that future research or CWE scope clarifications will change or deprecate them. Perform root-cause analysis to determine if other weaknesses allow CSRF attacks to occur, and map to those weaknesses. For example, predictable CSRF tokens might allow bypass of CSRF protection mechanisms; if this occurs, they might be better characterized as randomness/predictability weaknesses.
Relationships and members
Modes of introduction
REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Detection methods
Manual Analysis
This weakness can be detected using tools and techniques that require manual (human) analysis, such as penetration testing, threat modeling, and interactive tools that allow the tester to record and modify an active session.
Specifically, manual analysis can be useful for finding this weakness, and for minimizing false positives assuming an understanding of business logic. However, it might not achieve desired code coverage within limited time constraints. For black-box analysis, if credentials are not known for privileged accounts, then the most security-critical portions of the application may not receive sufficient attention.
Consider using OWASP CSRFTester to identify potential issues and aid in manual analysis.
Effectiveness: High
These may be more effective than strictly automated techniques. This is especially the case with weaknesses that are related to design and business rules.
Automated Static Analysis
CSRF is currently difficult to detect reliably using automated techniques. This is because each application has its own implicit security policy that dictates which requests can be influenced by an outsider and automatically performed on behalf of a user, versus which requests require strong confidence that the user intends to make the request. For example, a keyword search of the public portion of a web site is typically expected to be encoded within a link that can be launched automatically when the user clicks on the link.
Effectiveness: Limited
Automated Static Analysis - Binary or Bytecode
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Bytecode Weakness Analysis - including disassembler + source code weakness analysis
Binary Weakness Analysis - including disassembler + source code weakness analysis
Effectiveness: SOAR Partial
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
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:
Cost effective for partial coverage:
Focused Manual Spotcheck - Focused manual analysis of source
Manual Source Code Review (not inspections)
Effectiveness: SOAR Partial
Automated Static Analysis - Source Code
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Source code Weakness Analyzer
Context-configured Source Code Weakness Analyzer
Effectiveness: SOAR Partial
Architecture or Design Review
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.)
Formal Methods / Correct-By-Construction
Effectiveness: SOAR Partial
Notes
Relationship
There can be a close relationship between XSS and CSRF (CWE-352). An attacker might use CSRF in order to trick the victim into submitting requests to the server in which the requests contain an XSS payload. A well-known example of this was the Samy worm on MySpace [REF-956]. The worm used XSS to insert malicious HTML sequences into a user's profile and add the attacker as a MySpace friend. MySpace friends of that victim would then execute the payload to modify their own profiles, causing the worm to propagate exponentially. Since the victims did not intentionally insert the malicious script themselves, CSRF was a root cause.
Theoretical
The CSRF topology is multi-channel:
Attacker (as outsider) to intermediary (as user). The interaction point is either an external or internal channel.
Intermediary (as user) to server (as victim). The activation point is an internal channel.
Content history
Contributed usability diagram concepts used by the CWE team.
updated Time_of_Introduction
updated Alternate_Terms, Description, Relationships, Other_Notes, Relationship_Notes, Taxonomy_Mappings
updated Applicable_Platforms, Description, Likelihood_of_Exploit, Observed_Examples, Other_Notes, Potential_Mitigations, References, Relationship_Notes, Relationships, Research_Gaps, Theoretical_Notes
updated Potential_Mitigations
Added demonstrative example for profile.
updated Demonstrative_Examples, Related_Attack_Patterns
updated Common_Consequences, Demonstrative_Examples, Detection_Factors, Likelihood_of_Exploit, Observed_Examples, Potential_Mitigations, Time_of_Introduction
updated Applicable_Platforms, Detection_Factors, References, Relationships, Taxonomy_Mappings
updated Common_Consequences, Detection_Factors, Potential_Mitigations, References, Relationships
updated Potential_Mitigations
updated Description
updated Common_Consequences
updated Relationships
updated Potential_Mitigations, References
updated Related_Attack_Patterns, Relationships
updated Potential_Mitigations
updated Relationships
updated References, Relationships
updated Detection_Factors
updated Relationships
updated Applicable_Platforms, Likelihood_of_Exploit, Modes_of_Introduction, References, Relationships
updated References, Relationship_Notes, Research_Gaps
updated Relationships
updated Relationships
updated Relationships, Theoretical_Notes
updated Relationships
updated Relationships
updated Relationships
updated Relationships
updated References, Relationships
updated Mapping_Notes, Relationships
updated Relationships
updated Alternate_Terms, Common_Consequences, Description, Diagram
updated Detection_Factors, Potential_Mitigations, References
updated Applicable_Platforms, Relationships, Weakness_Ordinalities
updated Applicable_Platforms, Name, References, Relationships, Taxonomy_Mappings
15007 vulnerabilities reference this CWE, most recent first.
GHSA-2QHJ-48HF-MVHM
Vulnerability from github – Published: 2024-04-15 12:30 – Updated: 2026-04-28 21:34Cross-Site Request Forgery (CSRF) vulnerability in Rara Theme Spa and Salon.This issue affects Spa and Salon: from n/a through 1.2.7.
{
"affected": [],
"aliases": [
"CVE-2024-31384"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-15T11:15:10Z",
"severity": "MODERATE"
},
"details": "Cross-Site Request Forgery (CSRF) vulnerability in Rara Theme Spa and Salon.This issue affects Spa and Salon: from n/a through 1.2.7.",
"id": "GHSA-2qhj-48hf-mvhm",
"modified": "2026-04-28T21:34:44Z",
"published": "2024-04-15T12:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31384"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/spa-and-salon/wordpress-spa-and-salon-theme-1-2-7-cross-site-request-forgery-csrf-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-2QHV-J663-CR27
Vulnerability from github – Published: 2022-05-14 03:00 – Updated: 2022-05-14 03:00The administration panel of Jirafeau before 3.4.1 is vulnerable to three CSRF attacks on search functionalities: search_by_name, search_by_hash, and search_link.
{
"affected": [],
"aliases": [
"CVE-2018-11349"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-07T17:29:00Z",
"severity": "HIGH"
},
"details": "The administration panel of Jirafeau before 3.4.1 is vulnerable to three CSRF attacks on search functionalities: search_by_name, search_by_hash, and search_link.",
"id": "GHSA-2qhv-j663-cr27",
"modified": "2022-05-14T03:00:59Z",
"published": "2022-05-14T03:00:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11349"
},
{
"type": "WEB",
"url": "https://www.bishopfox.com/news/2018/06/jirafeau-version-3-3-0-multiple-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2QJC-J63H-9F97
Vulnerability from github – Published: 2026-10-31 18:30 – Updated: 2026-10-31 18:30Thelia before 3.2.0 contains a cross-site request forgery vulnerability in the back office that allows attackers to forge administrative actions because per-session CSRF tokens leak via URL query strings. Attackers can reuse leaked tokens or target the unprotected setToggleVisibilityAction and updatePositionAction to make logged-in administrators delete, hide or reorder catalogue and configuration objects.
{
"affected": [],
"aliases": [
"CVE-2026-120206"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-31T18:17:08Z",
"severity": "MODERATE"
},
"details": "Thelia before 3.2.0 contains a cross-site request forgery vulnerability in the back office that allows attackers to forge administrative actions because per-session CSRF tokens leak via URL query strings. Attackers can reuse leaked tokens or target the unprotected setToggleVisibilityAction and updatePositionAction to make logged-in administrators delete, hide or reorder catalogue and configuration objects.",
"id": "GHSA-2qjc-j63h-9f97",
"modified": "2026-10-31T18:30:23Z",
"published": "2026-10-31T18:30:23Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/thelia/thelia/security/advisories/GHSA-cfvv-2jvw-x2hp"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-120206"
},
{
"type": "WEB",
"url": "https://github.com/thelia-templates/default-twig/commit/a9647682572de056ba258a2d4d53e42f5b591b84"
},
{
"type": "WEB",
"url": "https://github.com/thelia/thelia/commit/55a7156e552d0b8145309b10175d13ecc1187433"
},
{
"type": "WEB",
"url": "https://github.com/thelia/thelia/blob/3.1.6/core/lib/Thelia/Controller/Admin/AbstractCrudController.php#L466"
},
{
"type": "WEB",
"url": "https://github.com/thelia/thelia/releases/tag/3.2.0"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/thelia-before-3.2.0-back-office-csrf-via-url-token-and-unprotected-actions"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/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-2QP4-532R-WMC3
Vulnerability from github – Published: 2022-05-17 01:43 – Updated: 2022-05-17 01:43Multiple cross-site request forgery (CSRF) vulnerabilities in the Maestro module 7.x-1.x before 7.x-1.2 for Drupal allow remote attackers to hijack the authentication of administrators for requests that (1) change workflows or (2) insert cross-site scripting (XSS) sequences.
{
"affected": [],
"aliases": [
"CVE-2012-3799"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-06-27T00:55:00Z",
"severity": "MODERATE"
},
"details": "Multiple cross-site request forgery (CSRF) vulnerabilities in the Maestro module 7.x-1.x before 7.x-1.2 for Drupal allow remote attackers to hijack the authentication of administrators for requests that (1) change workflows or (2) insert cross-site scripting (XSS) sequences.",
"id": "GHSA-2qp4-532r-wmc3",
"modified": "2022-05-17T01:43:17Z",
"published": "2022-05-17T01:43:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-3799"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/76146"
},
{
"type": "WEB",
"url": "http://drupal.org/node/1617952"
},
{
"type": "WEB",
"url": "http://drupal.org/node/1619830"
},
{
"type": "WEB",
"url": "http://drupalcode.org/project/maestro.git/commitdiff/c499971"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/49393"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2012/06/14/3"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/82714"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/53836"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2QPW-JPX2-W9HR
Vulnerability from github – Published: 2022-11-28 15:30 – Updated: 2022-11-30 06:30The Find and Replace All WordPress plugin before 1.3 does not have CSRF check when replacing string, which could allow attackers to make a logged admin replace arbitrary string in database tables via a CSRF attack
{
"affected": [],
"aliases": [
"CVE-2022-3850"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-28T14:15:00Z",
"severity": "MODERATE"
},
"details": "The Find and Replace All WordPress plugin before 1.3 does not have CSRF check when replacing string, which could allow attackers to make a logged admin replace arbitrary string in database tables via a CSRF attack",
"id": "GHSA-2qpw-jpx2-w9hr",
"modified": "2022-11-30T06:30:27Z",
"published": "2022-11-28T15:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3850"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/8ae42ec0-7e3a-4ea5-8e76-0aae7b92a8e9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-2QQ7-6JM7-RJCV
Vulnerability from github – Published: 2025-02-07 03:32 – Updated: 2025-10-10 21:31A vulnerability, which was classified as problematic, has been found in Mindskip xzs-mysql 学之思开源考试系统 3.9.0. Affected by this issue is some unknown functionality. The manipulation leads to cross-site request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Multiple endpoints are affected. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-1084"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-07T00:15:28Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as problematic, has been found in Mindskip xzs-mysql \u5b66\u4e4b\u601d\u5f00\u6e90\u8003\u8bd5\u7cfb\u7edf 3.9.0. Affected by this issue is some unknown functionality. The manipulation leads to cross-site request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Multiple endpoints are affected. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-2qq7-6jm7-rjcv",
"modified": "2025-10-10T21:31:12Z",
"published": "2025-02-07T03:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1084"
},
{
"type": "WEB",
"url": "https://github.com/cydtseng/Vulnerability-Research/blob/main/xzs-mysql/CrossSiteRequestForgery-Multiple.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.294860"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.294860"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.489644"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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-2QRW-V6M9-CJJQ
Vulnerability from github – Published: 2026-07-23 12:32 – Updated: 2026-07-23 12:32Unauthenticated Cross Site Request Forgery (CSRF) in ApusListing <= 1.2.63 versions.
{
"affected": [],
"aliases": [
"CVE-2026-57785"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-23T12:18:30Z",
"severity": "HIGH"
},
"details": "Unauthenticated Cross Site Request Forgery (CSRF) in ApusListing \u003c= 1.2.63 versions.",
"id": "GHSA-2qrw-v6m9-cjjq",
"modified": "2026-07-23T12:32:25Z",
"published": "2026-07-23T12:32:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57785"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/apuslisting/vulnerability/wordpress-apuslisting-theme-1-2-46-cross-site-request-forgery-csrf-to-broken-authentication-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2QW7-J9XQ-5QJQ
Vulnerability from github – Published: 2024-08-12 18:30 – Updated: 2024-08-13 15:31FrogCMS v0.9.5 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability via /admin/?/layout/delete/1
{
"affected": [],
"aliases": [
"CVE-2024-42623"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-12T17:15:17Z",
"severity": "HIGH"
},
"details": "FrogCMS v0.9.5 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability via /admin/?/layout/delete/1",
"id": "GHSA-2qw7-j9xq-5qjq",
"modified": "2024-08-13T15:31:34Z",
"published": "2024-08-12T18:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42623"
},
{
"type": "WEB",
"url": "https://github.com/Kirtoc/cms/tree/main/8/readme.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2QXP-XMX6-CQ4F
Vulnerability from github – Published: 2023-02-08 00:30 – Updated: 2023-02-15 22:00Cross-Site Request Forgery (CSRF) in GitHub repository wallabag/wallabag prior to 2.5.4.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "wallabag/wallabag"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-0735"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-08T18:13:53Z",
"nvd_published_at": "2023-02-07T23:15:00Z",
"severity": "MODERATE"
},
"details": "Cross-Site Request Forgery (CSRF) in GitHub repository wallabag/wallabag prior to 2.5.4.",
"id": "GHSA-2qxp-xmx6-cq4f",
"modified": "2023-02-15T22:00:35Z",
"published": "2023-02-08T00:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0735"
},
{
"type": "WEB",
"url": "https://github.com/wallabag/wallabag/commit/268372dbbdd7ef87b84617fdebf95d0a86caf7dc"
},
{
"type": "PACKAGE",
"url": "https://github.com/wallabag/wallabag"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/8bc78cb1-b10b-4152-842e-ceb999fc5508"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Cross-Site Request Forgery (CSRF) in wallabag/wallabag"
}
GHSA-2R2P-4CGF-HV7H
Vulnerability from github – Published: 2026-04-22 14:52 – Updated: 2026-04-22 14:52Summary
The local HTTP server started by engram server (binding 127.0.0.1:7337 by default) was exposed to any browser origin with no authentication unless ENGRAM_API_TOKEN was explicitly set. Combined with Access-Control-Allow-Origin: * on every response and a body parser that did not require Content-Type: application/json, this allowed a malicious web page the developer visited to:
- Exfiltrate the local knowledge graph via
GET /queryandGET /stats(function names, file layout, recorded decisions/mistakes). - Inject persistent prompt-injection payloads via
POST /learn, which wrotemistake/decisionnodes that were later surfaced as system-reminders to the user's AI coding agent on every future session and file edit.
Severity: High — confidentiality + persistent indirect prompt injection against the user's coding agent.
Affected versions
engramx >= 1.0.0, < 2.0.2 — any version that shipped the HTTP server.
Patched in
engramx@2.0.2
Workarounds (if you cannot upgrade)
- Do not run
engram serverorengram ui. - If developers must, set
ENGRAM_API_TOKENto a long random value and terminate the server before browsing the web.
Remediation (applied in 2.0.2)
- Fail-closed auth on every non-public route — Bearer header or HttpOnly cookie, constant-time comparison, 256-bit auto-generated token at
~/.engram/http-server.token(0600). - Wildcard CORS removed entirely; default is no CORS headers. Opt-in allowlist via
ENGRAM_ALLOWED_ORIGINS. - Host + Origin validation — rejects DNS rebinding and Host spoofing.
Content-Type: application/jsonenforced on mutations — blocks the text/plain CSRF vector./ui?token=bootstrap withSec-Fetch-Sitegate — prevents cross-origin oracle probing.
Credit
Discovered and responsibly disclosed by @gabiudrescu in engram issue #7.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "engramx"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-1188",
"CWE-306",
"CWE-352",
"CWE-942"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-22T14:52:03Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\n\nThe local HTTP server started by `engram server` (binding `127.0.0.1:7337` by default) was exposed to any browser origin with no authentication unless `ENGRAM_API_TOKEN` was explicitly set. Combined with `Access-Control-Allow-Origin: *` on every response and a body parser that did not require `Content-Type: application/json`, this allowed a malicious web page the developer visited to:\n\n1. **Exfiltrate** the local knowledge graph via `GET /query` and `GET /stats` (function names, file layout, recorded decisions/mistakes).\n2. **Inject persistent prompt-injection payloads** via `POST /learn`, which wrote `mistake`/`decision` nodes that were later surfaced as system-reminders to the user\u0027s AI coding agent on every future session and file edit.\n\nSeverity: **High** \u2014 confidentiality + persistent indirect prompt injection against the user\u0027s coding agent.\n\n### Affected versions\n\n`engramx` \u003e= 1.0.0, \u003c 2.0.2 \u2014 any version that shipped the HTTP server.\n\n### Patched in\n\n`engramx@2.0.2`\n\n### Workarounds (if you cannot upgrade)\n\n- Do **not** run `engram server` or `engram ui`.\n- If developers must, set `ENGRAM_API_TOKEN` to a long random value and terminate the server before browsing the web.\n\n### Remediation (applied in 2.0.2)\n\n1. Fail-closed auth on every non-public route \u2014 Bearer header or HttpOnly cookie, constant-time comparison, 256-bit auto-generated token at `~/.engram/http-server.token` (0600).\n2. Wildcard CORS removed entirely; default is no CORS headers. Opt-in allowlist via `ENGRAM_ALLOWED_ORIGINS`.\n3. Host + Origin validation \u2014 rejects DNS rebinding and Host spoofing.\n4. `Content-Type: application/json` enforced on mutations \u2014 blocks the text/plain CSRF vector.\n5. `/ui?token=` bootstrap with `Sec-Fetch-Site` gate \u2014 prevents cross-origin oracle probing.\n\n### Credit\n\nDiscovered and responsibly disclosed by @gabiudrescu in engram issue #7.",
"id": "GHSA-2r2p-4cgf-hv7h",
"modified": "2026-04-22T14:52:03Z",
"published": "2026-04-22T14:52:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/NickCirv/engram/security/advisories/GHSA-2r2p-4cgf-hv7h"
},
{
"type": "WEB",
"url": "https://github.com/NickCirv/engram/issues/7"
},
{
"type": "PACKAGE",
"url": "https://github.com/NickCirv/engram"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "engram: HTTP server CORS wildcard + auth-off-by-default enables CSRF graph exfiltration and persistent indirect prompt injection"
}
Mitigation MIT-4
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].
- For example, use anti-CSRF packages such as the OWASP CSRFGuard. [REF-330]
- Another example is the ESAPI Session Management control, which includes a component for CSRF. [REF-45]
Mitigation
Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
Mitigation
Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330). [REF-332]
Mitigation
Identify especially dangerous operations. When the user performs a dangerous operation, send a separate confirmation request to ensure that the user intended to perform that operation.
Mitigation
- Use the "double-submitted cookie" method as described by Felten and Zeller:
- When a user visits a site, the site should generate a pseudorandom value and set it as a cookie on the user's machine. The site should require every form submission to include this value as a form value and also as a cookie value. When a POST request is sent to the site, the request should only be considered valid if the form value and the cookie value are the same.
- Because of the same-origin policy, an attacker cannot read or modify the value stored in the cookie. To successfully submit a form on behalf of the user, the attacker would have to correctly guess the pseudorandom value. If the pseudorandom value is cryptographically strong, this will be prohibitively difficult.
- This technique requires Javascript, so it may not work for browsers that have Javascript disabled. [REF-331]
Mitigation
Do not use the GET method for any request that triggers a state change.
Mitigation
Check the HTTP Referer header to see if the request originated from an expected page. This could break legitimate functionality, because users or proxies may have disabled sending the Referer for privacy reasons.
CAPEC-111: JSON Hijacking (aka JavaScript Hijacking)
An attacker targets a system that uses JavaScript Object Notation (JSON) as a transport mechanism between the client and the server (common in Web 2.0 systems using AJAX) to steal possibly confidential information transmitted from the server back to the client inside the JSON object by taking advantage of the loophole in the browser's Same Origin Policy that does not prohibit JavaScript from one website to be included and executed in the context of another website.
CAPEC-462: Cross-Domain Search Timing
An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain.
CAPEC-467: Cross Site Identification
An attacker harvests identifying information about a victim via an active session that the victim's browser has with a social networking site. A victim may have the social networking site open in one tab or perhaps is simply using the "remember me" feature to keep their session with the social networking site active. An attacker induces a payload to execute in the victim's browser that transparently to the victim initiates a request to the social networking site (e.g., via available social network site APIs) to retrieve identifying information about a victim. While some of this information may be public, the attacker is able to harvest this information in context and may use it for further attacks on the user (e.g., spear phishing).
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.