What is CVE-2021-39938?

CVE-2021-39938 is a low-severity vulnerability in Gitlab, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2021-12-13.

How severe is CVE-2021-39938?

Low severity. CVSS v3 base score is 3.1 out of 10.

Resource exhaustion in Gitlab

CVE-2021-39938

A vulnerable regular expression pattern in GitLab CE/EE since version 8.15 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker to cause uncontrolled resource consumption leading to Denial of Service via specially crafted deploy Slash commands

Vulnerability class: DoS (Denial of Service)

EPSS: 0.009 (55.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Gitlab — versions >=14.5, <14.5.2, >=14.4, <14.4.4, >=8.15, <14.3.6

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-39938?: CVE-2021-39938 is a low-severity vulnerability in Gitlab, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2021-12-13.
How severe is CVE-2021-39938?: Low severity. CVSS v3 base score is 3.1 out of 10.