CVE-2025-65513Public exploitNetwork attack vector

Internal resource disclosure via full-URL validation

Published Dec 9, 2025 · Updated Dec 11, 2025

SSRF in Fetch MCP Server 1.0.2 and earlier allows remote attackers to read internal resources through attacker-supplied URLs. Fetcher._fetch passes the complete URL to private-ip instead of extracting its hostname, so the private-address check returns false and fetch proceeds. A reachable MCP interface that accepts an attacker-controlled URL is required; successful requests can disclose internal service or cloud metadata responses.

CVSS severity7.5
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Fetch MCP Server 1.0.2 and earlier allows remote attackers to read internal resources through attacker-supplied URLs. Fetcher._fetch passes the complete URL to private-ip instead of extracting its hostname, so the private-address check returns false and fetch proceeds. A reachable MCP interface that accepts an attacker-controlled URL is required; successful requests can disclose internal service or cloud metadata responses.

The record

CVE
CVE-2025-65513
Published
Dec 9, 2025
Updated
Dec 11, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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