CVE-2026-25552

Ghost CLI before 1.30.1 contains an IP spoofing vulnerability that allows unauthenticated remote attackers to bypass rate-limiting controls by manipulating the X-Forwarded-For header through a misconfigured Nginx configuration. Attackers can append attacker-controlled values to the header chain using the $proxy_add_x_forwarded_for directive to present an arbitrary IP address, circumventing Ghost's rate-limiting mechanisms on self-hosted instances.

Score

CVSS 4.0 6.3 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-07-31

Last modified

2026-10-23

Weaknesses

CWE-348

Affected products

• Ghost (Ghost)

References

• https://github.com/TryGhost/Ghost-CLI/security/advisories/GHSA-wjx2-9fpq-8997
• https://www.vulncheck.com/advisories/ghost-cli-ip-spoofing-via-x-forwarded-for-header