GHSA-jxrp-r7gx-q4j8

Source

https://github.com/advisories/GHSA-jxrp-r7gx-q4j8

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-jxrp-r7gx-q4j8/GHSA-jxrp-r7gx-q4j8.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-jxrp-r7gx-q4j8

Downstream

CGA (217)

Withdrawn

2026-10-02T22:43:11Z

Published

2026-07-24T15:33:01Z

Modified

2026-10-02T23:00:16Z

Severity

6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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 CVSS Calculator

Summary

Duplicate Advisory: DOMPurify: `CUSTOM_ELEMENT_HANDLING` bypasses `afterSanitizeElements` for allowed custom elements.

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-c2j3-45gr-mqc4. This link is maintained to preserve external references.

Original Description

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.

Database specific

{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-10-02T22:43:11Z",
    "nvd_published_at":  "2026-07-24T13:18:28Z",
    "severity":  "MODERATE"
}

References

Affected packages

npm / dompurify

Package

Name: dompurify; View open source insights on deps.dev
Purl: pkg:npm/dompurify

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

3.4.11

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-jxrp-r7gx-q4j8/GHSA-jxrp-r7gx-q4j8.json"