Dashboard / CVE-2026-112212

CVE-2026-112212

HIGH
MEDIUM Priority: 0.01 BB Relevance: 55/100
Published: 2026-10-22 Modified: 2026-10-27 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth Conf. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Required
S: Changed
C: High
I: Low
A: Low

Description

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.

Weakness Classification (1)

Affected Software (12)

VendorProductVersion
gitlab gitlab 18.3.0 – 19.3.6
gitlab gitlab 18.3.0 – 19.3.6
gitlab gitlab 19.4.0 – 19.4.3
gitlab gitlab 19.4.0 – 19.4.3
gitlab gitlab 19.5.0
gitlab gitlab 19.5.0
gitlab gitlab 18.3.0 – 19.3.6
gitlab gitlab 18.3.0 – 19.3.6
gitlab gitlab 19.4.0 – 19.4.3
gitlab gitlab 19.4.0 – 19.4.3
gitlab gitlab 19.5.0
gitlab gitlab 19.5.0

References & Advisories (2)

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No authentication

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L

EPSS — Exploitation Probability

0.19%
Raw Score 0.001900
Percentile 8.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00190
2026-10-28
0.00190

Intelligence Sources

nvd ref →

External Links