CVE-2026-4879

MEDIUM 4.3 ALL-YEARS

Published 2026-08-12 · Last modified 2026-08-13 · GitLab · NVD: Analyzed

GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to view external status check configuration restricted to higher-privileged roles due to missing authorization on a merge request API endpoint.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 26th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation poc, automatable no

Impact if exploited

4.3CVSS 3.1 · MEDIUM · CNA

ConfidentialityLow
IntegrityNone
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
⚠Privileges: Requires a low-privilege account
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot: 2026-10-26T04:59:11.116Z

Affected

Vendors Gitlab

Products Gitlab

Weakness (CWE)

CWE-862: : Missing Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Gitlab	Gitlab	≥ 16.0.0 and < 19.0.6
Gitlab	Gitlab	≥ 19.1.0 and < 19.1.4
Gitlab	Gitlab	≥ 19.2.0 and < 19.2.2

All CVSS metrics

MEDIUM 4.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
MEDIUM 4.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

Exploit-tagged references (not proof of a PoC)

https://hackerone.com/reports/3622861 technical-descriptionexploitpermissions-requiredPermissions RequiredCVE record · GitLab · Updated 2026-08-12T19:05:11.422Z
NVD · CVE-2026-4879 · Updated 2026-08-19T16:43:25.717

Advisories

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-57441 ADVISORYEUVD · EUVD-2026-57441

Technical & other

https://gitlab.com/gitlab-org/gitlab/-/work_items/594839 Broken LinkCVE record · GitLab · Updated 2026-08-12T19:05:11.422Z
NVD · CVE-2026-4879 · Updated 2026-08-19T16:43:25.717
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/ Release NotesCVE record · GitLab · Updated 2026-08-12T19:05:11.422Z
NVD · CVE-2026-4879 · Updated 2026-08-19T16:43:25.717

Sources: NVD · CVE.org · All sources and attribution · EPSS