Vulnerability in GitLab
CVE-2021-39881
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (57.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- GitLab — versions >=7.7, <14.1.7, >=14.2, <14.2.5, >=14.3, <14.3.1
References
- gitlab.com/gitlab-org/gitlab/-/issues/26695 (Broken Link)
- hackerone.com/reports/494530 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39881?
- CVE-2021-39881 is a low-severity vulnerability in GitLab. CVSS score: 3.5/10. Published 2021-10-05.
- How severe is CVE-2021-39881?
- Low severity. CVSS v3 base score is 3.5 out of 10.