CVE-2026-84677

5.4 mediumEPSS 0.2%

Medium (5.4). EPSS 0.2% chance of exploitation in the next 30 days.

Jenkins update-center2 3.18.3 and earlier does not escape plugin-provided values (plugin names, descriptions, and version metadata) on plugin download index pages, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide a plugin for hosting.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-09-02
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4038

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