tarteaucitron.js before 1.37.0 contains a cross-site scripting vulnerability because getElemAttr resolves 'data-' prefixed attributes while the https-only guard validates the unprefixed attribute. Attackers who can place markup, such as CMS authors, can add data-url with a javascript: URL beside a benign url to execute script in the site's origin via iframe src.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 2
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 15:07
- First seenCVSS 5.1NVD modified 2026-10-16 19:00
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 5
- https://github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js#L2641-L2648
- https://github.com/AmauriC/tarteaucitron.js/commit/068653bd47f5d4a493251ca8e15bd2b0be9b544f
- https://github.com/AmauriC/tarteaucitron.js/compare/v1.36.0...v1.37.0
- https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0
- https://www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-xss-via-getelemattr-attribute-validation-mismatch