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TI-2025-01860 Aliases CVE-2025-2123GHSA-pr6q-g5gv-qgr7

GeSHi CSS cssgen.php get_var cross site scripting

Priority MEDIUM 56CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting, Code execution
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79 and CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00475 41st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—GeSHi1.0.9.0; 1.0.9.1—No fix listedCNA
—geshi/geshi (Packagist)up to 1.0.9.1—No fix listedGHSA-pr6q-g5gv-qgr7
  • GeSHi Vendor— Affected 1.0.9.0; 1.0.9.1 Fixed in — No fix listed CNA
  • geshi/geshi (Packagist) Vendor— Affected up to 1.0.9.1 Fixed in — No fix listed GHSA-pr6q-g5gv-qgr7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qbnz:geshi:*:*:*:*:*:*:*:*up to 1.0.9.1VulnerableQbnz
  • cpe:2.3:a:qbnz:geshi:*:*:*:*:*:*:*:* Versions up to 1.0.9.1 Vulnerable ·Qbnz

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-2123
  2. 2026-10-03 Alias added: GHSA-pr6q-g5gv-qgr7

References

Exploit 2

Advisory 1

Other 1

  • TI-2012-03049 Multiple directory traversal vulnerabilities in the cssgen contrib module in GeSHi before… CVSS 2.0MEDIUM 5.0
  • TI-2012-03050 Cross-site scripting (XSS) vulnerability in contrib/langwiz.php in GeSHi before 1.0.8.11… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences