How severe is CVE-2025-9862?

No CVSS score has been assigned to CVE-2025-9862 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-9862?

CVE-2025-9862 affects the following packages: ghost (npm), ghost (npm). Ecosystems affected: npm.

How do I fix CVE-2025-9862?

Update ghost to 6.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-9862 is resolved across your whole dependency graph.

How do I detect CVE-2025-9862 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ghost, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-9862 if there is no patch (or I can't update yet)?

Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Is CVE-2025-9862 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-9862 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-9862?

CVE-2025-9862 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 44th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-9862?

CVE-2025-9862 is classified as Server-Side Request Forgery (SSRF) (CWE-918). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-9862 published, and has it been updated?

CVE-2025-9862 was published on September 17, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2025-9862 — ghost

Fix: TryGhost/Ghost@01d64c7

CVE-2025-9862 is a Server-Side Request Forgery (SSRF) vulnerability in ghost. A fix is available for ghost — see the affected versions and patch details below.

Ghost 6.0.6 - SSRF via oEmbed Bookmark

Also known asBIT-ghost-2025-9862GHSA-f7qg-xj45-w956

Published

Sep 17, 2025

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-9862.

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

2 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

8other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

ghostnpm

29Kdownloads / week

Description

Impact

A vulnerability in Ghost's oEmbed mechanism allows staff users to exfiltrate data from internal systems via SSRF.

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.

Patches

v5.130.4 and v6.0.9 contain a fix for this issue.

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].

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`ghost`	≥ 6.0.0&&< 6.0.9	6.0.9`npm install ghost@6.0.9`
📦npm	`ghost`	≥ 5.99.0&&< 5.130.4	5.130.4`npm install ghost@5.130.4`

Affected Products

1 product · 2 configurations

Application

ghostghost

≥ 6.0.0 && ≤ 6.0.8

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ghost, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ghost to 6.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-9862 is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

### Impact A vulnerability in Ghost's oEmbed mechanism allows staff users to exfiltrate data from internal systems via SSRF. ### 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. ### Patches v5.130.4 and v6.0.9 contain a fix for this issue. ### 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 [securi

O3 Security · Impact-Aware SCA

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