Summary
Ghost vulnerable to Server Side Request Forgery (SSRF) via oEmbed Bookmark
Vulnerable versions
This vulnerability is present in Ghost v5.99.0 to v5.130.3 to and Ghost v6.0.0 to v6.0.8.
References
The original report is available here: https://fluidattacks.com/advisories/regida
We thank Cristian Vargas for discovering and disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at [email protected].
Impact
A vulnerability in Ghost's oEmbed mechanism allows staff users to exfiltrate data from internal systems via SSRF.
Untrusted input controls the target URL of a server-initiated request, which may reach internal services not otherwise accessible from outside. Typical impact: access to internal metadata services, internal APIs, or cloud credentials.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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v5.130.4 and v6.0.9 contain a fix for this issue.
Frequently Asked Questions
- What is CVE-2025-9862? CVE-2025-9862 is a medium-severity server-side request forgery (SSRF) vulnerability in ghost (npm), affecting versions >= 6.0.0, <= 6.0.8. It is fixed in 6.0.9, 5.130.4. Untrusted input controls the target URL of a server-initiated request, which may reach internal services not otherwise accessible from outside.
- Which versions of ghost are affected by CVE-2025-9862? ghost (npm) versions >= 6.0.0, <= 6.0.8 is affected.
- Is there a fix for CVE-2025-9862? Yes. CVE-2025-9862 is fixed in 6.0.9, 5.130.4. Upgrade to this version or later.
- Is CVE-2025-9862 exploitable, and should I be worried? Whether CVE-2025-9862 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2025-9862 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2025-9862?
- Upgrade
ghostto 6.0.9 or later - Upgrade
ghostto 5.130.4 or later
- Upgrade