What’s Vulnerable › Vulnerabilities

CVE-2026-34098: Guardian Language-System XSS via id Parameter in media.php

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-01 · updated 2026-10-25
• Weakness: CWE-79

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

• guardian language-system: all versions

References

• https://gist.github.com/cyberinforepo/d5b2771d82e1b31b8fc1c33052e08dad
• https://www.vulncheck.com/advisories/guardian-language-system-xss-via-id-parameter-in-media-php

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