getgrav Grav up to 1.7.52 Backup Download Endpoint user/accounts/admin.yaml admin-nonce weak password hash

Summaryinfo

A vulnerability categorized as problematic has been discovered in getgrav Grav up to 1.7.52. This issue affects some unknown processing of the file user/accounts/admin.yaml of the component Backup Download Endpoint. Such manipulation of the argument admin-nonce leads to weak password hash. This vulnerability is documented as CVE-2026-55885. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in getgrav Grav up to 1.7.52 and classified as problematic. Affected by this issue is an unknown functionality of the file user/accounts/admin.yaml of the component Backup Download Endpoint. The manipulation of the argument admin-nonce with an unknown input leads to a weak password hash vulnerability. Using CWE to declare the problem leads to CWE-916. The product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive. Impacted is confidentiality. CVE summarizes:

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, through the backup download endpoint protected only by the session-static admin-nonce URL parameter. This issue is reported as fixed in version 1.7.53.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-55885 since 06/17/2026. The exploitation is known to be difficult. The attack may be launched remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1552 by the MITRE ATT&CK project.

Upgrading to version 1.7.53 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• getgrav

Name

• Grav

Version

• 1.7.0
• 1.7.1
• 1.7.2
• 1.7.3
• 1.7.4
• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18
• 1.7.19
• 1.7.20
• 1.7.21
• 1.7.22
• 1.7.23
• 1.7.24
• 1.7.25
• 1.7.26
• 1.7.27
• 1.7.28
• 1.7.29
• 1.7.30
• 1.7.31
• 1.7.32
• 1.7.33
• 1.7.34
• 1.7.35
• 1.7.36
• 1.7.37
• 1.7.38
• 1.7.39
• 1.7.40
• 1.7.41
• 1.7.42
• 1.7.43
• 1.7.44
• 1.7.45
• 1.7.46
• 1.7.47
• 1.7.48
• 1.7.49
• 1.7.50
• 1.7.51
• 1.7.52

Website

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

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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