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

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-39409 · CVE overview and exploitation status

EUVD-2026-20497

GHSA-xpcf-pg52-r92g

cve-program · CVE-2026-39409

• https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g
• https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39
• https://github.com/honojs/hono/releases/tag/v4.12.12

euvd · EUVD-2026-20497

• https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g
• https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39
• https://github.com/honojs/hono/releases/tag/v4.12.12

nvd · CVE-2026-39409

• https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39
• https://github.com/honojs/hono/releases/tag/v4.12.12
• https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g

osv · GHSA-xpcf-pg52-r92g

• https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g
• https://nvd.nist.gov/vuln/detail/CVE-2026-39409
• https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39
• https://github.com/honojs/hono
• https://github.com/honojs/hono/releases/tag/v4.12.12

No related changes are available here.