What is CVE-2021-39912?

CVE-2021-39912 is a medium-severity vulnerability in GitLab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2021-11-05.

How severe is CVE-2021-39912?

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

Resource exhaustion in GitLab

CVE-2021-39912

A potential DoS vulnerability was discovered in GitLab CE/EE starting with version 13.7. Using a malformed TIFF images was possible to trigger memory exhaustion.

Published 2021-11-05 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.015 (73.1th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

GitLab — versions >=14.4, <14.4.1, >=14.3, <14.3.4, >=13.7, <14.2.6

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

gitlab.com/gitlab-org/gitlab/-/issues/341363 (Broken Link)
hackerone.com/reports/1330882 (Permissions Required, Third Party Advisory)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39912.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-39912?: CVE-2021-39912 is a medium-severity vulnerability in GitLab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2021-11-05.
How severe is CVE-2021-39912?: Medium severity. CVSS v3 base score is 5.3 out of 10.