CVE-2026-4879 json
Missing Authorization in GitLab
published 2mo ago modified 2mo ago also BIT-gitlab-2026-4879 , EUVD-2026-57441
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami gitlab 19.0.6, 19.1.4, 19.2.2
- GitLab GitLab 19.0.6, 19.1.4, 19.2.2
Is CVE-2026-4879 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3622861 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=16.0.0, <19.0.6 >=19.1.0, <19.1.4 >=19.2.0, <19.2.2 |
19.0.6 19.1.4 19.2.2 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
-
hackerone.com
/reports/3622861
technical-description, exploit, permissions-required, web
-
gitlab.com
/gitlab-org/gitlab/-/work_items/594839
broken-link, web
-
docs.gitlab.com
/releases/patches/patch-release-gitlab-19-2-2-released/
release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-4879
web
Sources
- CVE List CVE-2026-4879
- NVD CVE-2026-4879
- OSV BIT-gitlab-2026-4879
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.