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CVE-2025-2123

20
FAUCET Score

CVE-2025-2123 is a problematic Cross-Site Scripting (XSS) vulnerability found in GeSHi versions up to 1.0.9.1, specifically within the CSS Handler component's get_var function in /contrib/cssgen.php. This vulnerability, rated Medium severity with a CVSS score of 6.1, can be exploited remotely by manipulating specific arguments, potentially leading to client-side script execution. While the exploit has been publicly disclosed, there is currently no evidence of active exploitation, nor are there Metasploit, Nuclei, or ExploitDB modules available, and community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.9.1CPE matchmatch criteria
cpe:2.3:a:qbnz:geshi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 36th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

composerGHSA-pr6q-g5gv-qgr7medium

GeSHi XSS possible in the get_var function of /contrib/cssgen.php

Mar 9, 2025

References

github.com / GeSHi/geshi-1.0/issues/159
ExploitIssue TrackingThird Party Advisory
github.com / GeSHi/geshi-1.0/issues/159
ExploitIssue TrackingThird Party Advisory
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
ExploitThird Party AdvisoryVDB Entry