SB20260814114 - Multiple vulnerabilities in Ghost

Description

This security bulletin contains information about 2 vulnerabilities.

1) Server-Side Request Forgery (SSRF) (CVE-ID: N/A)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to probe internal hosts from the server.

The vulnerability exists due to server-side request forgery in the webhooks feature when triggering webhook requests. A remote privileged user can configure a webhook target to probe internal hosts from the server.

2) Path Traversal: \'.../...//\' (CVE-ID: N/A)

CWE-ID: CWE-35 - Path Traversal: \'.../...//\'

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to disclose local files outside the intended data storage directories.

The vulnerability exists due to path traversal in ImageSize Service when processing user-supplied file paths. A remote privileged user can supply a crafted path to disclose local files outside the intended data storage directories.

Remediation

Install update from vendor's website.

References

• https://github.com/TryGhost/Ghost/security/advisories/GHSA-354h-gmhv-mr9c
• https://github.com/TryGhost/Ghost/security/advisories/GHSA-83rp-q473-j88c