CVE-2021-22171
MEDIUMCVSS 6.5/10EPSS 1.33%
Last modified
CVE-2021-22171 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Insufficient validation of authentication parameters in GitLab Pages for GitLab 11.5+ allows an attacker to steal a victim's API token if they click on a maliciously crafted link. EPSS estimates a 1.33% chance of exploitation in the next 30 days.
Description
Insufficient validation of authentication parameters in GitLab Pages for GitLab 11.5+ allows an attacker to steal a victim's API token if they click on a maliciously crafted link
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 11.5.0, < 13.5.6 |
| Gitlab | Gitlab | >= 13.6.0, < 13.6.4 |
| Gitlab | Gitlab | >= 13.7.0, < 13.7.2 |
References
- https://hackerone.com/reports/718460Permissions Required, Third Party Advisory
- https://hackerone.com/reports/718460Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-22171?
Insufficient validation of authentication parameters in GitLab Pages for GitLab 11.5+ allows an attacker to steal a victim's API token if they click on a maliciously crafted link
How severe is CVE-2021-22171?
CVE-2021-22171 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22171?
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-2021-22171?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST