XSS in Cure53 Dompurify
CVE-2025-26791
DOMPurify before 3.2.4 has an incorrect template literal regular expression, sometimes leading to mutation cross-site scripting (mXSS).
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.001 (28.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Cure53 Dompurify — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
- H4mzaX/XSSniper
- NeuraLegion/brokencrystals
- Ng0Sang/Brokencrystals-CI-CD-Pipeline
- Sang-DevSecOps1/Brokencrystals-CI-CD-Pipeline
- alaminmohammed8482-max/Broken-Crystals
- andasgupta/OWASP-Dependency-Check-Report-Analyzer-AI
- fkie-cad/nvd-json-data-feeds
- gregdo21/brokencrystals
- hdgittest/brokencrystals
- officialsangdavid/Brokencrystals-CI-CD-Pipeline
References
Frequently asked questions
- What is CVE-2025-26791?
- CVE-2025-26791 is a medium-severity vulnerability in Cure53 Dompurify, classified under Cross-site Scripting. CVSS score: 4.5/10. Published 2025-02-14.
- How severe is CVE-2025-26791?
- Medium severity. CVSS v3 base score is 4.5 out of 10.
- Is CVE-2025-26791 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.