CVE-2026-74842Public exploitNetwork attack vector

Authenticated SSRF via unvalidated image_url fetch

Published Aug 17, 2026 · Updated Aug 18, 2026

Server-side request forgery in KiraIO PromptShopMCP allows authenticated attackers to reach internal HTTP services via image_url. In server.py, the shared download_image() helper passes caller-controlled URLs from generate_image_from_url and remove_background directly to requests.get() and only checks Content-Type and image validity after the outbound request is sent, with no scheme, host, or IP-range validation. Exposure requires access to those MCP tools, and the flaw can be used for internal service probing, metadata access, and forwarding attacker-chosen image responses to downstream Gemini, remove.bg, or freeimage.host processing; the affected public revision is 5bc0cd17358e19a5415d11a531088170d7b81452.

CVSS severity6.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in KiraIO PromptShopMCP allows authenticated attackers to reach internal HTTP services via image_url. In server.py, the shared download_image() helper passes caller-controlled URLs from generate_image_from_url and remove_background directly to requests.get() and only checks Content-Type and image validity after the outbound request is sent, with no scheme, host, or IP-range validation. Exposure requires access to those MCP tools, and the flaw can be used for internal service probing, metadata access, and forwarding attacker-chosen image responses to downstream Gemini, remove.bg, or freeimage.host processing; the affected public revision is 5bc0cd17358e19a5415d11a531088170d7b81452.

The record

CVE
CVE-2026-74842
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
KiraIO
Product
PromptShopMCP
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=5bc0cd17358e19a5415d11a531088170d7b81452

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

KiraIO · PromptShopMCPversion=5bc0cd17358e19a5415d11a531088170d7b81452

Published CVSS scores

2.1VulDBCVSS: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
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A: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.

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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

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Your stack

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