SB2026100506 - Multiple vulnerabilities in Grav CMS

Description

This security bulletin contains information about 3 vulnerabilities.

1) Resource exhaustion (CVE-ID: N/A)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when system.images.url_actions is enabled. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

2) Exposed dangerous method or function (CVE-ID: N/A)

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper trust evaluation of renamed fields in Flex forms. A remote user can invoke arbitrary public static methods and delete, move, overwrite, or read arbitrary files.

3) Information disclosure (CVE-ID: N/A)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application within form config-*@ directives. A remote user can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://github.com/getgrav/grav/security/advisories/GHSA-8gr9-59p6-r488
• https://github.com/getgrav/grav/security/advisories/GHSA-9rq7-4cch-f22j
• https://github.com/getgrav/grav/security/advisories/GHSA-8wwq-x3w5-fxmw