CVE-2026-15387 json
Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab
published 2026-08-26 2 mo ago modified 2026-09-08 2 mo ago also BIT-gitlab-2026-15387 , EUVD-2026-66429
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have influenced the execution environment of Pipeline Execution Policy enforcement jobs, due to improper handling of job dependencies.
Patch / fix
- bitnami gitlab 19.1.7, 19.2.5, 19.3.1
- GitLab GitLab 19.1.7, 19.2.5, 19.3.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3754358 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:N/I:L/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=19.1.0, <19.1.7 >=19.2.0, <19.2.5 >=19.3.0, <19.3.1 |
19.1.7 19.2.5 19.3.1 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data
- Technology feeds
References
-
hackerone.com
/reports/3754358
technical-description, exploit, permissions-required, third-party-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/work_items/605632
issue-tracking, vendor-advisory, advisory
-
docs.gitlab.com
/releases/patches/patch-release-gitlab-19-3-1-released/
release-notes, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-15387
web
Sources
- CVE List CVE-2026-15387
- NVD CVE-2026-15387
- OSV BIT-gitlab-2026-15387
Fencer Vulns 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.