CVE-2026-112212 json
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab
published 19d ago modified 5d ago also BIT-gitlab-2026-112212 , EUVD-2026-107671
- cvss
- 7.5
- 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 8%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have poisoned a shared cache's OAuth/OIDC discovery document to redirect certain flows to an externally controlled server, due to improper trust of user-supplied values when constructing endpoint URLs in cached discovery responses.
Patch / fix
- bitnami gitlab 19.3.6, 19.4.3, 19.5.1
- GitLab GitLab 19.3.6, 19.4.3, 19.5.1
Is CVE-2026-112212 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
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10d ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=18.3.0, <19.3.6 >=19.4.0, <19.4.3 >=19.5.0, <19.5.1 |
19.3.6 19.4.3 19.5.1 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
- Technology feeds
References
-
docs.gitlab.com
/releases/patches/patch-release-gitlab-19-5-1-released/
release-notes, vendor-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/work_items/627499
permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-112212
web
Sources
- CVE List CVE-2026-112212
- NVD CVE-2026-112212
- OSV BIT-gitlab-2026-112212
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.