Public proof of conceptFix available

CVE-2023-0121

Q: Is CVE-2023-0121 actively exploited?

A proof-of-concept exploit exists for CVE-2023-0121, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2023-0121?

CVE-2023-0121 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

A public proof of concept exists; no exploitation attested.

Published2023-06-07
Fixed in16.0.2 · 15.11.7 · 15.10.8
WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A denial of service issue was discovered in GitLab CE/EE affecting all versions starting from 13.2.4 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2 which allows an attacker to cause high resource consumption using malicious test report artifacts.

Timeline

dates in UTC

2023-06-0717:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-0121?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-0121?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

GitLab

Branch	Affected	Fixed in	Source
16.0	≥ 16.0.0, < 16.0.2	16.0.2	NVD · OSV
15.11	≥ 15.11.0, < 15.11.7	15.11.7	NVD · OSV
15.10	≥ 13.2.4, < 15.10.8	15.10.8	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update GitLab to 16.0.2 · 15.11.7 · 15.10.8

Advisories and patches

gitlab.comVendor Advisory
gitlab.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionpoc2025-01-07
OpenCVESSVC decisionpoc—
CNACVSS 3.16.5read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-770read 2026-10-23
NVDweakness (CWE)CWE-770read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-06-07
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-0121?

Is CVE-2023-0121 actively exploited?

A proof-of-concept exploit exists for CVE-2023-0121, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-0121?

CVE-2023-0121 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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