Skip to content
Fencer Vulns
high 7.5

CVE-2026-112212 json

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLab

published 2026-10-21 18 d ago modified 2026-11-04 4 d 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

Sources

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.