What is CVE-2021-22197?

CVE-2021-22197 is a low-severity vulnerability in GitLab, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 3.5/10. Published 2021-04-02.

How severe is CVE-2021-22197?

Low severity. CVSS v3 base score is 3.5 out of 10.

Is CVE-2021-22197 known to be exploited?

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

Vulnerability in GitLab

CVE-2021-22197

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.6 where an infinite loop exist when an authenticated user with specific rights access a MR having source and target branch pointing to each other

Published 2021-04-02 · last modified 2026-06-17.

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:N/A:L.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

GitLab — versions >=10.6, <13.8.7, >=13.9, <13.9.5, >=13.10, <13.10.1

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

Public proof-of-concept exploits

0xfschott/CVE-search

References

gitlab.com/gitlab-org/gitlab/-/issues/323198 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22197.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22197?: CVE-2021-22197 is a low-severity vulnerability in GitLab, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 3.5/10. Published 2021-04-02.
How severe is CVE-2021-22197?: Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2021-22197 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.