CVE-2026-112776CWE-863broken-access-control

CVE-2026-112776

Critical · published October 20, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
21.7
In the wild
Unconfirmed
What it is

Craft CMS from 5.0.0 before 5.11.0 contains an authorization bypass vulnerability that allows site-scoped GraphQL tokens to mutate other sites' content because requireAllowedSite() is not enforced. Attackers holding a site-A token can create entries in site B via supplied siteId and delete entries, categories, tags, and assets shared across sites.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00302 · 21.7th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-10-20T00:17Z
References (2)
https://github.com/craftcms/cms/security/advisories/GHSA-7rr3-4jcm-x526 · [email protected]https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.11.0-graphql-site-scope-bypass-via-mutations · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 19:10Z
    Craft CMS 5.0.0 before 5.11.0 GraphQL Site-Scope Bypass via Mutations
    cvelistv5
  • 19 OCT 19:10Z
    Craft CMS 5.0.0 before 5.11.0 GraphQL Site-Scope Bypass via Mutations
    cvelistv5