tarteaucitron.js vulnerable to DOM Clobbering via document.currentScript

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2025-48939: 0.20% estimated exploitation activity in the next 30 days; percentile 10.21 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A vulnerability was identified in tarteaucitron.js where document.currentScript was accessed without verifying that it referenced an actual <script element. If an attacker injected an HTML element such as: it could clobber the document.currentScript property. This causes the script to resolve incorrectly to an <img element instead of the <script tag, leading to unexpected behavior or failure to load the script path correctly. This issue arises because in some browser environments, named DOM elements (e.g., name="currentScript") become properties on the global document object. Impact An attacker with control over the HTML could exploit this to change the CDN domain of tarteaucitron. Fix https://github.com/AmauriC/tarteaucitron.js/commit/230a3b69d363837acfa895823d841e0608826ba3 The issue was resolved by verifying that document.currentScript is an instance of HTMLScriptElement. If not, the script now falls back safely to the last <script tag on the page.

Published by the source

3 Jul 2025, 16:59 UTC

Last modified by the source

3 Jul 2025, 18:50 UTC

Source last checked

26 Oct 2026, 12:37 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-q43x-79jr-cq98

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-q43x-79jr-cq98

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# Patch Next advisory brief: CVE-2025-48939

Advisory: tarteaucitron.js vulnerable to DOM Clobbering via document.currentScript
IDs: CVE-2025-48939, GHSA-q43x-79jr-cq98
Record: https://patchnext.com/advisories/cve-2025-48939 (revision 2, source checked 26 Oct 2026, 12:37 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.2)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: tarteaucitronjs 1.22.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm tarteaucitronjs: affected < 1.22.0; fixed in 1.22.0

## Suggested inspection (read-only)
- `npm ls tarteaucitronjs --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on tarteaucitronjs.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-q43x-79jr-cq98 (OSV record GHSA-q43x-79jr-cq98 lists affected ranges: npm tarteaucitronjs >=0 <1.22.0 (fixed))
- Verified: https://github.com/advisories/GHSA-q43x-79jr-cq98 (GitHub-reviewed advisory GHSA-q43x-79jr-cq98 lists affected ranges: npm tarteaucitronjs >=0 <1.22.0)

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