What is CVE-2021-22210?

CVE-2021-22210 is a medium-severity vulnerability in GitLab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2021-05-06.

How severe is CVE-2021-22210?

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

Is CVE-2021-22210 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in GitLab

CVE-2021-22210

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.2. When querying the repository branches through API, GitLab was ignoring a query parameter and returning a considerable amount of results.

Published 2021-05-06 · 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: 0.011 (65.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

GitLab — versions >=13.11, <13.11.2, >=13.10, <13.10.4, >=13.2, <13.9.7

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Public proof-of-concept exploits

References

gitlab.com/gitlab-org/gitlab/-/issues/322500 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22210.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22210?: CVE-2021-22210 is a medium-severity vulnerability in GitLab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2021-05-06.
How severe is CVE-2021-22210?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-22210 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.