getgrav Grav up to 1.10.52 User Management /admin/user saveUser Password improper authorization

Summaryinfo

A vulnerability marked as problematic has been reported in getgrav Grav up to 1.10.52. Affected is the function saveUser of the file /admin/user of the component User Management. This manipulation of the argument Password causes improper authorization. This vulnerability appears as CVE-2026-59190. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in getgrav Grav up to 1.10.52 and classified as problematic. Affected by this vulnerability is the function saveUser of the file /admin/user of the component User Management. The manipulation of the argument password with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

grav-plugin-admin is an HTML user interface that provides a way to configure Grav and create and modify pages. In 1.10.52 and earlier, an authenticated attacker with admin.users permission can change the password of any user account, including the super administrator, by sending a direct POST request to /admin/user/{username}?task=save with data[password] because saveUser authorizes the caller's user-management permission but does not verify whether the caller may edit the target user. This issue is expected to be fixed in version 1.10.53.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-59190 since 07/02/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 1.10.53 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-42950). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• getgrav

Name

• Grav

Version

• 1.10.0
• 1.10.1
• 1.10.2
• 1.10.3
• 1.10.4
• 1.10.5
• 1.10.6
• 1.10.7
• 1.10.8
• 1.10.9
• 1.10.10
• 1.10.11
• 1.10.12
• 1.10.13
• 1.10.14
• 1.10.15
• 1.10.16
• 1.10.17
• 1.10.18
• 1.10.19
• 1.10.20
• 1.10.21
• 1.10.22
• 1.10.23
• 1.10.24
• 1.10.25
• 1.10.26
• 1.10.27
• 1.10.28
• 1.10.29
• 1.10.30
• 1.10.31
• 1.10.32
• 1.10.33
• 1.10.34
• 1.10.35
• 1.10.36
• 1.10.37
• 1.10.38
• 1.10.39
• 1.10.40
• 1.10.41
• 1.10.42
• 1.10.43
• 1.10.44
• 1.10.45
• 1.10.46
• 1.10.47
• 1.10.48
• 1.10.49
• 1.10.50
• 1.10.51
• 1.10.52

Website

• Product: https://github.com/getgrav/grav/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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