CVE-2026-84648CWE-79cross-site-scripting

CVE-2026-84648

High · published September 2, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
47.1
In the wild
Unconfirmed
What it is

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00583 · 47.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-02T20:17Z
Affected products (2)
ProductVersionsFixed in
jenkins/jenkins< 2.568.32.568.3
jenkins/jenkins< 2.5802.580
References (1)
https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3967 · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 15:40Z
    In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a…
    cvelistv5