CVE-2026-34096: Guardian Language-System XSS via name Parameter in designer.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 name GET parameter before outputting it into an HTML input value attribute in designer.php (line 57). An authenticated attacker can craft a URL containing script tags that execute 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-designer-php-name-parameter

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