CVE-2026-58030

SyntaxHighlight stored XSS via unsanitized 'linelinks' attribute

CVSS 5.3 MEDIUMEPSS 0.4%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation SyntaxHighlight_GeSHi. This vulnerability is associated with program files includes/SyntaxHighlight.Php. This issue affects SyntaxHighlight_GeSHi: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

Wikimedia Foundation · SyntaxHighlight_GeSHi

References

https://phabricator.wikimedia.org/T427167