Is open-websearch affected by CVE-2026-42260?

npm open-websearch is affected in <2.1.7.

Is CVE-2026-42260 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

high

CVE-2026-42260

Q: Is CVE-2026-42260 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

npm · open-websearch

Summary

open-websearch has SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Severity: high
EPSS: 0.2% (p12)
Also known as: GHSA-v228-72c7-fx8j
Published: 2026-05-05

References

https://github.com/Aas-ee/open-webSearch/security/advisories/GHSA-v228-72c7-fx8j
https://nvd.nist.gov/vuln/detail/CVE-2026-42260
https://github.com/Aas-ee/open-webSearch

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.