CVE-2026-84795 json
Craft CMS before 5.10.11 Authentication Bypass via Admin Flag Inheritance
published 2mo ago modified 2mo ago also EUVD-2026-69907 , GHSA-242m-9wq7-vhwq
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository craftcms/cms. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
Craft CMS before 5.10.11 fails to validate the admin flag during user registration, allowing it to persist from deactivated admin accounts. Attackers can register with a deactivated admin's email address to inherit administrator privileges when public registration and disabled email verification are configured.
Patch / fix
- craftcms cms 5.10.11
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- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- craftcms cms
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
github.com
/craftcms/cms/security/advisories/GHSA-242m-9wq7-vhwq
vendor-advisory, advisory
-
vulncheck.com
/advisories/craft-cms-before-5.10.11-authentication-bypass-via-admin-flag-inheritance
third-party-advisory
Sources
- CVE List CVE-2026-84795
- NVD CVE-2026-84795
- Maintainer advisory GHSA-242m-9wq7-vhwq
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of craftcms/cms published their own advisory on GitHub. Reviewed sources take precedence over it.