What is CVE-2026-34098?

CVE-2026-34098 is a medium-severity vulnerability in Guardian Language-System, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-07-01.

How severe is CVE-2026-34098?

Medium severity. CVSS v3 base score is 4.6 out of 10.

XSS in Guardian Language-System

CVE-2026-34098

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Guardian Language-system — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-34098?: CVE-2026-34098 is a medium-severity vulnerability in Guardian Language-System, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-07-01.
How severe is CVE-2026-34098?: Medium severity. CVSS v3 base score is 4.6 out of 10.