CVE-2026-111713

MEDIUM 5.4

tarteaucitron.js before 1.37.0 XSS via getElemAttr Attribute Validation Mismatch

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	amauric
Product	tarteaucitron.js
Published	Oct 16, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

AmauriC / tarteaucitron.js

1.20.1 < 1.37.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/AmauriC/tarteaucitron.js/commit/068653bd47f5d4a493251ca8e15bd2b0be9b544f github.com: https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0 github.com: https://github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js#L2641-L2648 github.com: https://github.com/AmauriC/tarteaucitron.js/compare/v1.36.0...v1.37.0 vulncheck.com: https://www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-xss-via-getelemattr-attribute-validation-mismatch

Credits

Zachariah Mithani