Auth bypass in Craftcms Cms
CVE-2026-124426
Craft CMS from 5.0.0 before 5.11.2 contains an authorization bypass vulnerability that allows unauthenticated attackers to read content from sites outside a GraphQL schema's Sites scope. Attackers can send a POST request to /actions/graphql/api selecting the localized field without the siteId argument to disclose out-of-scope site content.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-mp59-9rf5-93wr) (vendor-advisory)
- VulnCheck Advisory: Craft CMS before 5.11.2 GraphQL Sites Scope Bypass via localized Field (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124426?
- CVE-2026-124426 is a medium-severity vulnerability in Craftcms Cms, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-11-08.
- How severe is CVE-2026-124426?
- Medium severity. CVSS v3 base score is 5.3 out of 10.