CVE-2026-65056Public exploitNetwork attack vector

Internal data disclosure via unfiltered visit_page URLs

Published Jul 21, 2026 · Updated Jul 21, 2026

SSRF in mzxrai mcp-webresearch 0.1.7 allows remote attackers to read internal HTTP services through a prompt-injected visit_page URL. The visit_page handler passes an LLM-produced URL to Playwright after isValidUrl checks only for HTTP or HTTPS, without blocking reserved addresses or redirect targets. A prompt-injected research result is sufficient to steer the browser to loopback, private, or cloud metadata endpoints and return page text, including exposed credentials, into model context.

CVSS severity8.3
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in mzxrai mcp-webresearch 0.1.7 allows remote attackers to read internal HTTP services through a prompt-injected visit_page URL. The visit_page handler passes an LLM-produced URL to Playwright after isValidUrl checks only for HTTP or HTTPS, without blocking reserved addresses or redirect targets. A prompt-injected research result is sufficient to steer the browser to loopback, private, or cloud metadata endpoints and return page text, including exposed credentials, into model context.

The record

CVE
CVE-2026-65056
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
mzxrai
Product
mcp-webresearch
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

mzxrai · mcp-webresearchversion=0 <=0.1.7

Published CVSS scores

8.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
8.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A: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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