CVE-2026-39409

unknown

Published 2026-04-08 · Modified 2026-05-05

CVSS v3

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

CVSS v2

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VIR risk

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Description

Hono has incorrect IP matching in ipRestriction() for IPv4-mapped IPv6 addresses

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	hono	`<4.12.12`	`4.12.12`

References

Verify integrity in audit chain (admin only). AS-IS.