RCE in Qbnz Geshi

CVE-2025-2123

A vulnerability, which was classified as problematic, has been found in GeSHi up to 1.0.9.1. Affected by this issue is the function get_var of the file /contrib/cssgen.php of the component CSS Handler. The manipulation of the argument default-styles/keywords-1/keywords-2/keywords-3/keywords-4/comments leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (34.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
  • cna@vuldb.com (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, Issue Tracking)
  • cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)

Frequently asked questions

What is CVE-2025-2123?
CVE-2025-2123 is a low-severity vulnerability in Qbnz Geshi, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2025-03-09.
How severe is CVE-2025-2123?
Low severity. CVSS v3 base score is 3.5 out of 10.