CVE-2021-21689
CRITICALCVSS 9.1/10EPSS 1.42%
Last modified
CVE-2021-21689 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. FilePath#unzip and FilePath#untar were not subject to any agent-to-controller access control in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.. EPSS estimates a 1.42% chance of exploitation in the next 30 days.
Description
FilePath#unzip and FilePath#untar were not subject to any agent-to-controller access control 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:N
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-2021-21689?
FilePath#unzip and FilePath#untar were not subject to any agent-to-controller access control in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
How severe is CVE-2021-21689?
CVE-2021-21689 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21689?
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-2021-21683The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 a…6.5
- CVE-2021-21684Jenkins Git Plugin 4.8.2 and earlier does not escape the Git…6.1
- 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-2021-2169Vulnerability in the MySQL Server product of Oracle MySQL (c…4.9
- CVE-2021-21690Agent processes are able to completely bypass file path filt…9.8
- 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
Are you affected by CVE-2021-21689?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST