What is CVE-2021-39909?

CVE-2021-39909 is a medium-severity vulnerability in Gitlab, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.3/10. Published 2021-11-05.

How severe is CVE-2021-39909?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Gitlab

CVE-2021-39909

Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under rare circumstances

EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Gitlab — versions >=11.3, <14.2.6, 14.4.0, >=14.3, <14.3.4

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (Permissions Required, Third Party Advisory, x_refsource_MISC)
cve@gitlab.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39909?: CVE-2021-39909 is a medium-severity vulnerability in Gitlab, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.3/10. Published 2021-11-05.
How severe is CVE-2021-39909?: Medium severity. CVSS v3 base score is 5.3 out of 10.