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Advisory record · GHSA-6688-9rhm-gjv2

DOMPurify: IN_PLACE returns a force-removed rawtext root whose text carries attacker markup — pure HTML reparse executes

CVSS 5.1 MediumEPSS 0.0025 · 16th percentile

Published by the GitHub Advisory Database at 5 Oct 2026, 23:43 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
dompurifynpm<3.4.163.4.16
Identifiers
GHSA-6688-9rhm-gjv2 · CVE-2026-109345
Weakness (CWE)
CWE-79
Tags
Published
5 Oct 2026
Updated
13 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

DOMPurify versions before 3.4.16 (npm dompurify) can return a force-removed rawtext root from the IN_PLACE path with its text content still carrying attacker markup, because the 3.4.9 attribute-only neutralization does not cover text. An attacker who can supply input sanitized in IN_PLACE mode can get script to run when the application serializes the returned node and re-parses it as HTML, although re-inserting the node with appendChild alone does not trigger it. The source describes the issue as reproduced on 3.4.15 and recommends upgrading to 3.4.16, which is listed as the fixed version.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.1 Medium 4.0 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 CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0025, the 16th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 23 Sept 2026, 15:17 UTC Published by the maintainers as a GitHub repository advisory
  2. 31 Oct 2026, 13:33 UTC First seen by agentprime
  3. 31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.