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Vulnerability record · CVE-2026-42260 · published 12 May 2026

CVE-2026-42260: Server-side request forgery (SSRF) vulnerability

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF with the response body returned to the caller. This vulnerability is fixed in 2.1.7.

8.2 CVSS 3.1 High EPSS 0.37% · top 72.2% CWE-918 · Server-side request forgery (SSRF) Deferred
8.2CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF with the response body returned to the caller. This vulnerability is fixed in 2.1.7.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

References

LinkTags
https://github.com/Aas-ee/open-webSearch/security/advisories/GHSA-v228-72c7-fx8j
https://github.com/Aas-ee/open-webSearch/security/advisories/GHSA-v228-72c7-fx8j

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Source: NIST National Vulnerability Database (record CVE-2026-42260), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.