What is CVE-2022-4205?

CVE-2022-4205 is a medium-severity vulnerability in GitLab, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 6.3/10. Published 2023-01-27.

How severe is CVE-2022-4205?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in GitLab

CVE-2022-4205

In Gitlab EE/CE before 15.6.1, 15.5.5 and 15.4.6 using a branch with a hexadecimal name could override an existing hash.

Published 2023-01-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.006 (46.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

GitLab — versions >=15.5, <15.5.5, >=1.0, <12.9.8, 15.6.0

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

gitlab.com/gitlab-org/gitlab/-/issues/374082 (Exploit, Issue Tracking, Vendor Advisory)
gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4205.json (Vendor Advisory)

Frequently asked questions

What is CVE-2022-4205?: CVE-2022-4205 is a medium-severity vulnerability in GitLab, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 6.3/10. Published 2023-01-27.
How severe is CVE-2022-4205?: Medium severity. CVSS v3 base score is 6.3 out of 10.