CVE-2026-65914

🔶 medium

Summary

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

CVSS Score

6.1

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2026-07-23

First Seen: 2026-07-31

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 38.4% of all 340,620 vulnerabilities in our database.

#209,905

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 23, 2026

🔍 Exploitation Status

Poc

Proof-of-concept available

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

researchatfluidattacks (reporter) caverav tachote

SSVC data provided by CISA

Last Modified 2026-07-28

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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

CWE IDs (Weakness Types)

CWE-79

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
cure53	dompurify	Affected	< 3.3.2

🔗 References 2

https://github.com/cure53/DOMPurify/security/advisor...

Exploit Third Party Advisory

https://www.vulncheck.com/advisories/dompurify-befor...

Third Party Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-65898	⚠️ high	7.2	0.2	DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute...	2026-07-23
CVE-2026-65899	🔶 medium	6.1	0.2	DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPuri...	2026-07-23
CVE-2026-65900	🔶 medium	6.1	0.2	DOMPurify versions >=3.0.0 and before 3.4.8, when configured with SAFE_FOR_TEMPLATES together with a DOM output mode (RE...	2026-07-23
CVE-2026-65901	🔶 medium	6.1	0.2	DOMPurify through 3.4.6 contains a cross-site scripting vulnerability in IN_PLACE mode that trusts attacker-controlled n...	2026-07-23
CVE-2026-65902	🔶 medium	6.1	0.2	DOMPurify before 3.4.7 (affected versions <= 3.4.5) passes direct references to the module-level DEFAULT_ALLOWED_TAGS an...	2026-07-23
CVE-2026-65903	🔶 medium	6.1	0.2	DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden t...	2026-07-23

These CVEs affect the same products