CVE-2026-84646CWE-502insecure-deserialization

CVE-2026-84646

Medium · published September 2, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
26.0
In the wild
Unconfirmed
What it is

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, user objects can appear as nested field values in other deserialized XML objects, allowing attackers with Overall/Read permission to create user objects by submitting crafted XML.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00338 · 26.0th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
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-3908 · [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, user objects can appear as nested field values in other deserialized XML objects, allowing attackers…
    cvelistv5