GHSA-wj3q-vw2v-3rj3: Duplicate Advisory Cross-Site Scripting Vulnerability

MODERATE
Share
CVSS 5.4
CWE-79
Published
Advisory Summary

GHSA-wj3q-vw2v-3rj3 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Duplicate Advisory libraries in the Packagist ecosystem. The issue involves phpmyfaq: svg sanitizer entity decoding depth limit bypass leading to stored xss. Remediation is available by upgrading affected packages to version 4.1.2.

GHSA-wj3q-vw2v-3rj3 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-wj3q-vw2v-3rj3
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Duplicate Advisory
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix GHSA-wj3q-vw2v-3rj3

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

phpMyFAQ/phpMyFAQ fixed: 4.1.2 
Upgrade phpMyFAQ/phpMyFAQ to 4.1.2
thorsten/phpMyFAQ fixed: 4.1.2 
Upgrade thorsten/phpMyFAQ to 4.1.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for phpMyFAQ/phpMyFAQ

How to Check if You Are Affected

To determine whether your application is affected by GHSA-wj3q-vw2v-3rj3, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for phpMyFAQ/phpMyFAQ

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.1.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-whqh-9pq5-c7r3. This link is maintained to preserve external references. ### Original Description phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in SvgSanitizer::decodeAllEntities() that limits recursive entity decoding to 5 iterations, allowing attackers to bypass sanitization. Authenticated users with FAQ_EDIT permission can upload malicious SVG files with deeply nested ampersand encoding around numeric HTML entities to reconstruct javascript: URLs, which execute arbitrary JavaScript when clicked by other users viewing the uploaded SVG.

GHSA-wj3q-vw2v-3rj3 Affected Duplicate Advisory Versions

2 component(s)
Fixed Versions:
4.1.2
Product / Package Ecosystem Affected Versions Fixed Version
phpMyFAQ/phpMyFAQ
 Packagist
< 4.1.2
4.1.2
thorsten/phpMyFAQ
 Packagist
< 4.1.2
4.1.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-whqh-9pq5-c7r3
NVD — GHSA-wj3q-vw2v-3rj3 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46360
Duplicate Advisory Source Repository REPOSITORY
https://github.com/thorsten/phpMyFAQ
www.vulncheck.com/advisories/phpmyfaq... WEB
https://www.vulncheck.com/advisories/phpmyfaq-stored-xss-via-entity-decoding-depth-limit-bypass-in-svg-sanitizer

Frequently Asked Questions

What is GHSA-wj3q-vw2v-3rj3?
GHSA-wj3q-vw2v-3rj3 is a security vulnerability in Duplicate Advisory involving phpMyFAQ: SVG Sanitizer Entity Decoding Depth Limit Bypass Leading to Stored XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 4.1.2 across affected packages: phpMyFAQ/phpMyFAQ, thorsten/phpMyFAQ.
What version fixes GHSA-wj3q-vw2v-3rj3?
Upgrading to 4.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is phpMyFAQ/phpMyFAQ affected?
Yes, phpMyFAQ/phpMyFAQ is affected in releases prior to 4.1.2. Upgrade your dependency to 4.1.2 or later.
Is thorsten/phpMyFAQ affected?
Yes, thorsten/phpMyFAQ is affected in releases prior to 4.1.2. Upgrade your dependency to 4.1.2 or later.
What is the CVSS score of GHSA-wj3q-vw2v-3rj3?
GHSA-wj3q-vw2v-3rj3 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with GHSA-wj3q-vw2v-3rj3?
GHSA-wj3q-vw2v-3rj3 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for GHSA-wj3q-vw2v-3rj3?
Run the dependency tree command: 'inspect dependencies for phpMyFAQ/phpMyFAQ'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wj3q-vw2v-3rj3",
  "modified" : "2026-06-09T00:03:36Z",
  "published" : "2026-05-15T21:31:32Z",
  "withdrawn" : "2026-06-09T00:03:36Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: phpMyFAQ: SVG Sanitizer Entity Decoding Depth Limit Bypass Leading to Stored XSS",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-whqh-9pq5-c7r3. This link is maintained to preserve external references.\n\n### Original Description\nphpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in SvgSanitizer::decodeAllEntities() that limits recursive entity decoding to 5 iterations, allowing attackers to bypass sanitization. Authenticated users with FAQ_EDIT permission can upload malicious SVG files with deeply nested ampersand encoding around numeric HTML entities to reconstruct javascript: URLs, which execute arbitrary JavaScript when clicked by other users viewing the uploaded SVG.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpMyFAQ/phpMyFAQ"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "thorsten/phpMyFAQ"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-whqh-9pq5-c7r3"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46360"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/thorsten/phpMyFAQ"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/phpmyfaq-stored-xss-via-entity-decoding-depth-limit-bypass-in-svg-sanitizer"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-21T21:16:25Z",
    "nvd_published_at" : "2026-05-15T19:17:03Z"
  }
}