CVE-2026-109344 json
DOMPurify from 3.4.13 before 3.4.16 DOM XSS via IN_PLACE afterSanitize Hooks
published last mo. modified 24d ago also EUVD-2026-97646 , GHSA-p98j-92pf-mc4p
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
DOMPurify from 3.4.13 before 3.4.16 contains a cross-site scripting vulnerability because IN_PLACE mode fails to neutralize subtrees detached by afterSanitizeElements or afterSanitizeAttributes hooks. Attackers can supply markup with on* handlers inside a wrapper removed by such hooks, leaving handlers armed on the live DOM to execute script in the victim origin.
Patch / fix
- npm dompurify 3.4.16
- cure53 DOMPurify 3.4.16
- node-dompurify Debian 14 3.4.16+dfsg-1
debian advisories DEBIAN-CVE-2026-109344
- github.com/cure53/DOMPurify@b9b9d80 commit
- github.com/cure53/DOMPurify#1636 pull request
- github.com/cure53/DOMPurify/releases/tag/3.4.16 release
Is CVE-2026-109344 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-109344 updated cvss 6.1
dompurify: DOMPurify: Cross-Site Scripting via unneutralized elements detached during in-place sanitization
-
Red Hat Hardened Images ruff 0.15.11-1.1.hum1, grafana13.1 13.1.7-0.1.hum1, grafana13.2 13.2.3-0.1.hum1, grafana12.4 12.4.12-0.4.hum1not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 27d ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.1 | 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 | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.1 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | dompurify | >=3.4.13, <3.4.16 |
3.4.16 |
Affected products
- cure53 DOMPurify
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/cure53/DOMPurify/pull/1636
web
-
github.com
/cure53/DOMPurify/commit/b9b9d80f7e401771c2ccaef5f45def7eec8f27d7
web
-
github.com
/cure53/DOMPurify/security/advisories/GHSA-p98j-92pf-mc4p
vendor-advisory, web
-
vulncheck.com
/advisories/dompurify-from-3.4.13-before-3.4.16-dom-xss-via-in-place-aftersanitize-hooks
third-party-advisory
-
github.com
/cure53/DOMPurify
package
-
github.com
/cure53/DOMPurify/releases/tag/3.4.16
web
Sources
- CVE List CVE-2026-109344
- GitHub Advisory GHSA-p98j-92pf-mc4p
- NVD CVE-2026-109344
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.