VULNERABILITY INTELLIGENCE
CVE-2021-21606
CVSS score4.3 MEDIUM
EPSS probability1.23%
CISA KEVNot currently listed
Published2021-01-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for the existence of XML files with a short path.
Weakness classification
- CWE-20: Improper Input Validation
Primary references
- jenkinsci-cert@googlegroups.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory