---
id: CVE-2026-111713
title: >-
  tarteaucitron.js before 1.37.0 XSS via getElemAttr Attribute Validation
  Mismatch
summary: >-
  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 …
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: AmauriC
product: tarteaucitron.js
affected:
  - tarteaucitron.js >= 1.20.1 < 1.37.0
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:40:02.702Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111713'
references:
  - url: >-
      https://github.com/AmauriC/tarteaucitron.js/commit/068653bd47f5d4a493251ca8e15bd2b0be9b544f
  - url: 'https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0'
    label: tarteaucitron.js v1.37.0 Release Notes
  - url: >-
      https://github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js#L2641-L2648
  - url: 'https://github.com/AmauriC/tarteaucitron.js/compare/v1.36.0...v1.37.0'
  - url: >-
      https://www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-xss-via-getelemattr-attribute-validation-mismatch
    label: >-
      VulnCheck Advisory: tarteaucitron.js before 1.37.0 XSS via getElemAttr
      Attribute Validation Mismatch
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.639Z'
---

## Overview

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.

## Affected

- `tarteaucitron.js >= 1.20.1 < 1.37.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.