How severe is CVE-2021-22259?

CVE-2021-22259 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-22259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22259?

CVE-2021-22259 affects Gitlab. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22259?

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

When was CVE-2021-22259 published?

CVE-2021-22259 was published on 2021-10-04 and last updated on 2026-06-17.

CVE-2021-22259

CVE-2021-22259 is a medium-severity vulnerability in Gitlab with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gitlab
Published: 2021-10-04
Last modified: 2026-06-17

Description

A potential DOS vulnerability was discovered in GitLab EE starting with version 12.6 due to lack of pagination in dependencies API.

Frequently asked questions

What is CVE-2021-22259?: A potential DOS vulnerability was discovered in GitLab EE starting with version 12.6 due to lack of pagination in dependencies API.
How severe is CVE-2021-22259?: CVE-2021-22259 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-22259 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22259?: CVE-2021-22259 affects Gitlab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22259?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22259 published?: CVE-2021-22259 was published on 2021-10-04 and last updated on 2026-06-17.

References

Affected products (1)

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 →