CVE-2026-19957Public exploitNetwork attack vector

Authenticated SSRF via unconstrained retrieveImages URL

Published Aug 16, 2026 · Updated Aug 16, 2026

Server-side request forgery in Graphlit MCP Server 1.0.1 allows remote authenticated users to request internal resources via retrieveImages. The tool accepts an unconstrained URL, passes it directly to Node.js fetch(), reads the entire response, Base64-encodes it, and sends it to Graphlit as imageData. Invocation requires configured Graphlit credentials, and the server can reach internal services or metadata endpoints and transmit their response bodies downstream.

CVSS severity6.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Server-side request forgery in Graphlit MCP Server 1.0.1 allows remote authenticated users to request internal resources via retrieveImages. The tool accepts an unconstrained URL, passes it directly to Node.js fetch(), reads the entire response, Base64-encodes it, and sends it to Graphlit as imageData. Invocation requires configured Graphlit credentials, and the server can reach internal services or metadata endpoints and transmit their response bodies downstream.

The record

CVE
CVE-2026-19957
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Graphlit
Product
Graphlit MCP Server
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Graphlit · Graphlit MCP Serverversion=1.0.1

Published CVSS scores

6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo