SSRF via incomplete private-address filtering
Published Apr 27, 2026 · Updated Apr 27, 2026
SSRF in mcp-data-vis de5a51525a69822290eaee569a1ab447b490746d allows remote attackers to access server-reachable HTTP resources. Its web-scraper handlers validate caller-supplied URLs with hostname-prefix checks that omit 172.16/12, link-local, IPv6, and redirect destinations before passing them to axios. Exploitation requires access to an affected MCP tool and server egress to the chosen destination, enabling reads from reachable internal services and state changes where those services accept them.
Summary
What happened
SSRF in mcp-data-vis de5a51525a69822290eaee569a1ab447b490746d allows remote attackers to access server-reachable HTTP resources. Its web-scraper handlers validate caller-supplied URLs with hostname-prefix checks that omit 172.16/12, link-local, IPv6, and redirect destinations before passing them to axios. Exploitation requires access to an affected MCP tool and server egress to the chosen destination, enabling reads from reachable internal services and state changes where those services accept them.
The record
- CVE
- CVE-2026-7146
- Published
- Apr 27, 2026
- Updated
- Apr 27, 2026
- Vendor
- Alejandro Arciniegas
- Product
- mcp-data-vis
- Classifications
- CWE-918
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 27, 2026CVE publishedPublication date reported by the CVE source.
- Apr 27, 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?
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- Affected versionversion=de5a51525a69822290eaee569a1ab447b490746d
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- GitHub issue JSON-RPC SSRF reproductionproof of concept · unverified
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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