What is GHSA-f887-chxw-8674?

GHSA-f887-chxw-8674 is a security advisory published by GitHub Security Advisories with High severity. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19...

Which CVE IDs does GHSA-f887-chxw-8674 cover?

GHSA-f887-chxw-8674 covers the following CVE IDs: CVE-2026-112212. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-f887-chxw-8674?

GHSA-f887-chxw-8674 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-f887-chxw-8674HighCVSS 7.5

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19...

Vendor

GitHub Security Advisories

Published

October 22, 2026

Last Modified

October 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-112212 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-112212
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released
https://gitlab.com/gitlab-org/gitlab/-/work_items/627499
https://github.com/advisories/GHSA-f887-chxw-8674