CVE-2021-21696
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of
02 Description
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 83.7% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-11-04 16:30Z4 YR AGO
- Last updated
- 2024-08-03 18:23Z2 YR AGO
- Reserved
- 2021-01-04
- Assigning CNA
- jenkins
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.1
- Document digest
- e364b985651288fa2e9871a96764ba6270f8d58966c98f623b36c7dca914d235
05 Affected products
06 References
- www.jenkins.iohttps://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2423
- www.openwall.com[oss-security] 20211104 Multiple vulnerabilities in Jenkins and Jenkins pluginshttp://www.openwall.com/lists/oss-security/2021/11/04/3
07 Fixed in
Arch Linux
- jenkins Fixed in 2.319-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.