Vulnerability in GitLab
CVE-2021-39873
In all versions of GitLab CE/EE, there exists a content spoofing vulnerability which may be leveraged by attackers to trick users into visiting a malicious website by spoofing the content in an error response.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% 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 4.3.0, >=14.3, <14.3.1, >=14.2, <14.2.5
References
- gitlab.com/gitlab-org/gitlab/-/issues/27241 (Broken Link)
- hackerone.com/reports/504961 (Permissions Required, Third Party Advisory)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39873.json (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39873?
- CVE-2021-39873 is a medium-severity vulnerability in GitLab. CVSS score: 4.3/10. Published 2021-10-04.
- How severe is CVE-2021-39873?
- Medium severity. CVSS v3 base score is 4.3 out of 10.