CVE-2021-39881
Last modified
CVE-2021-39881 is a low-severity vulnerability rated 3.5/10 on the CVSS scale. In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.
Description
In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 7.7.0, < 14.1.7 |
| Gitlab | Gitlab | >= 14.2.0, < 14.2.5 |
| Gitlab | Gitlab | >= 14.3.0, < 14.3.1 |
References
- https://hackerone.com/reports/494530Permissions Required, Third Party Advisory
- https://hackerone.com/reports/494530Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39881?
How severe is CVE-2021-39881?
How do I fix CVE-2021-39881?
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-2021-39876In all versions of GitLab CE/EE since version 11.3, the endp…4.3
- CVE-2021-39877A vulnerability was discovered in GitLab starting with versi…5.5
- CVE-2021-39878A stored Reflected Cross-Site Scripting vulnerability in the…5.4
- CVE-2021-39879Missing authentication in all versions of GitLab CE/EE since…3.5
- CVE-2021-3988A Cross-site Scripting (XSS) vulnerability exists in janeczk…6.1
- CVE-2021-39880A Denial Of Service vulnerability in the apollo_upload_serve…6.5
- CVE-2021-39882In all versions of GitLab CE/EE, provided a user ID, anonymo…5.3
- CVE-2021-39883Improper authorization checks in all versions of GitLab EE s…4.3
- CVE-2021-39884In all versions of GitLab EE since version 8.13, an endpoint…4.3
- CVE-2021-39885A Stored XSS in merge request creation page in all versions …5.4
- CVE-2021-39886Permissions rules were not applied while issues were moved b…4.3
- CVE-2021-39887A stored Cross-Site Scripting vulnerability in the GitLab Fl…5.4
Are you affected by CVE-2021-39881?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST