Vulnerability · Published Jul 1, 2026 · Assigned by VulnCheck
CVE-2026-34098Guardian Language-System XSS via id Parameter in media.php
Medium 4.6
In plain English
A medium-severity cross-site scripting in language-system from guardian. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)4.6Medium
Exploit odds (30 days)0.2%top 85.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Guardian language-system fails to sanitize the id GET parameter before inserting it into HTML source and form action attributes in media.php (lines 119, 129). An authenticated attacker can craft a URL that injects script tags executing in the victim's browser session.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| guardian | language-system | 0 – through e42c395ec4b03fe62973a669c9209a673838b8a4 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
References
- Researcher Disclosure technical-description, exploit
- https://www.vulncheck.com/advisories/guardian-language-system-xss-via-id-parameter-in-media-php third-party-advisory