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 fil...

Description

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

5.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.41%

32.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qbnz	Geshi	<= 1.0.9.1

References

https://github.com/GeSHi/geshi-1.0/issues/159Exploit, Issue Tracking, Third Party Advisory
https://github.com/GeSHi/geshi-1.0/issues/159#issue-2880408694Exploit, Issue Tracking, Third Party Advisory
https://vuldb.com/?ctiid.299036Permissions Required, VDB Entry
https://vuldb.com/?id.299036Third Party Advisory, VDB Entry
https://vuldb.com/?submit.507418Exploit, Third Party Advisory, VDB Entry
https://github.com/GeSHi/geshi-1.0/issues/159Exploit, Issue Tracking, Third Party Advisory
https://github.com/GeSHi/geshi-1.0/issues/159#issue-2880408694Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Mar 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is 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.

How severe is CVE-2025-2123?

CVE-2025-2123 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2025-2123?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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