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CVE

CVE-2026-42613

Grav: Privilege Escalation via Missing Server-Side Validation of groups/access
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CVE

CVE-2026-42613

Grav: Privilege Escalation via Missing Server-Side Validation of groups/access

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, the Login::register() method in the Login plugin accepts attacker-controlled groups and access fields from the registration POST data without server-side validation. When registration is enabled and groups or access are included in the configured allowed fields list, an unauthenticated user can self-register with admin.super privileges by injecting these fields into the registration request. This vulnerability is fixed in 2.0.0-beta.2.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.4
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42613.json, https://github.com/getgrav/grav/security/advisories/GHSA-pxm6-mhxr-q4mj, https://nvd.nist.gov/vuln/detail/CVE-2026-42613, https://github.com/getgrav/grav-plugin-login/commit/3d419a0dabd70aed1fd49afcd5919004a4141da1, https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw

Severity

9.4

CVSS Score
0
10

Basic Information

Base CVSS
9.4
EPSS Probability
0.00939%
EPSS Percentile
0.59384%
Introduced Version
0
Fix Available
3d419a0dabd70aed1fd49afcd5919004a4141da1

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