CVE-2021-39877
MEDIUMCVSS 5.5/10EPSS 1.01%
Last modified
CVE-2021-39877 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability was discovered in GitLab starting with version 12.2 that allows an attacker to cause uncontrolled resource consumption with a specially crafted file.. EPSS estimates a 1.01% chance of exploitation in the next 30 days.
Description
A vulnerability was discovered in GitLab starting with version 12.2 that allows an attacker to cause uncontrolled resource consumption with a specially crafted file.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 12.2.0, < 14.1.7 |
| Gitlab | Gitlab | >= 14.2, < 14.2.5 |
| Gitlab | Gitlab | >= 14.3, < 14.3.1 |
References
- https://hackerone.com/reports/1077021Permissions Required, Third Party Advisory
- https://hackerone.com/reports/1077021Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39877?
A vulnerability was discovered in GitLab starting with version 12.2 that allows an attacker to cause uncontrolled resource consumption with a specially crafted file.
How severe is CVE-2021-39877?
CVE-2021-39877 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39877?
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.
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Are you affected by CVE-2021-39877?
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