CVE-2021-21690
CRITICALCVSS 9.8/10EPSS 2.45%
Last modified
CVE-2021-21690 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.. EPSS estimates a 2.45% chance of exploitation in the next 30 days.
Description
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jenkins | Jenkins | < 2.303.3 |
| Jenkins | Jenkins | < 2.319 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21690?
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
How severe is CVE-2021-21690?
CVE-2021-21690 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.45% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21690?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-21685Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.1
- CVE-2021-21686File path filters in the agent-to-controller security subsys…8.1
- CVE-2021-21687Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.1
- CVE-2021-21688The agent-to-controller security check FilePath#reading(File…7.5
- CVE-2021-21689FilePath#unzip and FilePath#untar were not subject to any ag…9.1
- CVE-2021-2169Vulnerability in the MySQL Server product of Oracle MySQL (c…4.9
- CVE-2021-21691Creating symbolic links is possible without the 'symlink' ag…9.8
- CVE-2021-21692FilePath#renameTo and FilePath#moveAllChildrenTo in Jenkins …9.8
- CVE-2021-21693When creating temporary files, agent-to-controller access to…9.8
- CVE-2021-21694FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, Fi…9.8
- CVE-2021-21695FilePath#listFiles lists files outside directories that agen…8.8
- CVE-2021-21696Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.8
Are you affected by CVE-2021-21690?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST