CVE-2026-3855 json
Improper Control of Resource Identifiers ('Resource Injection') in GitLab
published 2026-09-16 53 d ago modified 2026-09-29 40 d ago also BIT-gitlab-2026-3855 , EUVD-2026-80121
- cvss
- 3.1
- 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 27%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2.7 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user with project-level permissions to access restricted file contents on the server or cause denial of service due to improper validation of parameters in the Terraform state upload functionality.
Patch / fix
- bitnami gitlab 19.1.8, 19.2.6, 19.3.2
- GitLab GitLab 19.1.8, 19.2.6, 19.3.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 53 d ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3575167 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H |
| OSV | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=18.2.7, <19.1.8 >=19.2.0, <19.2.6 >=19.3.0, <19.3.2 |
19.1.8 19.2.6 19.3.2 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-99 Improper Control of Resource Identifiers
- Technology feeds
References
-
hackerone.com
/reports/3575167
technical-description, exploit, permissions-required, web
-
docs.gitlab.com
/releases/patches/patch-release-gitlab-19-3-2-released/
release-notes, vendor-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/work_items/592821
broken-link, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-3855
web
Sources
- CVE List CVE-2026-3855
- NVD CVE-2026-3855
- OSV BIT-gitlab-2026-3855
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.