SB20260919185 - Multiple vulnerabilities in Ghost

Description

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect authorization (CVE-ID: N/A)

CWE-ID: CWE-863 - Incorrect Authorization

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

The vulnerability allows a remote attacker to disclose restricted post content.

The vulnerability exists due to incorrect authorization in the content API when handling requests for gated post content. A remote attacker can request gated post content to disclose restricted post content.

2) Observable discrepancy (CVE-ID: N/A)

CWE-ID: CWE-203 - Observable discrepancy

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

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to observable discrepancies in content API metadata when handling content API requests. A remote attacker can observe metadata discrepancies to disclose sensitive information.

Remediation

Install update from vendor's website.

References

• https://github.com/TryGhost/Ghost/security/advisories/GHSA-rcx7-6m7p-xw5c
• https://github.com/TryGhost/Ghost/security/advisories/GHSA-ffmj-3ppp-cj4r