What is GHSA-f54h-78c9-c24h?

GHSA-f54h-78c9-c24h is a security advisory published by GitHub Security Advisories with Low severity. For Concrete CMS 9.5.0 and below, OAuth 2.0 Authorization-Code Handler Bypasses Account Status. A...

Which CVE IDs does GHSA-f54h-78c9-c24h cover?

GHSA-f54h-78c9-c24h covers the following CVE IDs: CVE-2026-7887. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-f54h-78c9-c24hLow

For Concrete CMS 9.5.0 and below, OAuth 2.0 Authorization-Code Handler Bypasses Account Status. A...

Vendor

GitHub Security Advisories

Published

May 22, 2026

Last Modified

May 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-7887 →

📋 Description

For Concrete CMS 9.5.0 and below, OAuth 2.0 Authorization-Code Handler Bypasses Account Status. A user with uIsActive=0 (suspended, banned, terminated employee) can still authenticate via OAuth and receive valid API tokens. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N. Thanks 0x4c616e for reporting.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-7887
https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
https://github.com/advisories/GHSA-f54h-78c9-c24h