CVE-2026-42609 - Vulnerability Analysis
HighCVSS: 8.1Last Updated: May 12, 2026
Grav - Broken Access Control
Overview
Grav < 2.0.0-beta.2 contains a business logic vulnerability in the Admin Panel caused by improper handling of user creation with existing usernames, letting low-privileged users overwrite accounts, causing denial of service and privilege de-escalation, exploit requires user creation permissions.
Severity & Score
Impact
Low-privileged users can overwrite admin accounts, causing denial of service and privilege de-escalation of the root account.
Mitigation
Update to version 2.0.0-beta.2 or later.
References
- https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632
- https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8
- https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663
- https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47
Social Media Activity(2 posts)
š CVE-2026-42609 - High (8.1) Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator... š https://www.thehackerwire.com/vulnerability/CVE-2026-42609/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
View original post
š CVE-2026-42609 - High (8.1) Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator... š https://www.thehackerwire.com/vulnerability/CVE-2026-42609/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
View original postRelated Resources
Details
- CVE ID
- CVE-2026-42609
- Severity
- High
- CVSS Score
- 8.1
- Type
- broken_access_control
- Status
- confirmed
- EPSS
- 3.9%
- Social Posts
- 2
CWE
- CWE-269
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H