How severe is CVE-2021-22197?

CVE-2021-22197 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-22197 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22197?

CVE-2021-22197 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22197?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-22197 published?

CVE-2021-22197 was published on 2021-04-02 and last updated on 2026-06-17.

CVE-2021-22197

CVE-2021-22197 is a low-severity vulnerability in Gitlab with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Gitlab
Published: 2021-04-02
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2021-22197?: CVE-2021-22197 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-22197 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22197?: CVE-2021-22197 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22197?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22197 published?: CVE-2021-22197 was published on 2021-04-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*

More vulnerabilities in Gitlab

CVE-2024-45409 — Critical (CVSS 10.0): The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <=…
CVE-2023-7028 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions from 16.1 prior to 16.1.6, 16.2 prior to 16.2.9,…
CVE-2023-2825 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting only version 16.0.0. An unauthenticated malicious user can use a…
CVE-2022-0735 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.6.5, all versions…
CVE-2021-22205 — Critical (CVSS 10.0): An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly…
CVE-2019-9174 — Critical (CVSS 10.0): An issue was discovered in GitLab Community and Enterprise Edition before 11.6.10, 11.7.x before 11.7.6, and 11.8.x…

All CVEs affecting Gitlab →

Other CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities

CVE-2026-24816 — Critical (CVSS 10.0): Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in datavane tis…
CVE-2018-20784 — Critical (CVSS 9.8): In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a…
CVE-2017-12997 — Critical (CVSS 9.8): The LLDP parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in…
CVE-2017-12995 — Critical (CVSS 9.8): The DNS parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-domain.c:ns_print().
CVE-2017-12990 — Critical (CVSS 9.8): The ISAKMP parser in tcpdump before 4.9.2 could enter an infinite loop due to bugs in print-isakmp.c, several functions.
CVE-2026-31448 — Critical (CVSS 9.4): In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual…

Browse all CWE-835 (Loop with Unreachable Exit Condition (Infinite Loop)) vulnerabilities →