CSRF Vulnerability in jquery-ujs
Versions 1.0.3 and earlier of jquery-ujs are vulnerable to an information leakage attack that may enable attackers to launch CSRF attacks, as it allows attackers to send CSRF tokens to external domains.
When an attacker controls the href attribute of an anchor tag, or the action attribute of a form tag triggering a POST action, the attacker can set the href or action to " https://attacker.com". By prepending a space to the external domain, it causes jQuery to consider it a same origin request, resulting in the user's CSRF token being sent to the external domain.
Recommendation
Upgrade jquery-ujs to version 1.0.4 or later.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | jquery-ujs | < 1.0.4 | 1.0.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-352- Platform
- npm
- Package
jquery-ujs- Disclosed
- 31.08.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6qqj-rx4w-r3cj - CC BY 4.0
Vulnerability history: jquery-ujs
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.