CVE-2026-44457 — Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage

CVE-2026-44457

Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage PUBLISHED

Description (CNA)

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, Cache Middleware does not skip caching for responses that declare per-user variance via Vary: Authorization or Vary: Cookie. As a result, a response cached for one authenticated user may be served to subsequent requests from different users. This vulnerability is fixed in 4.12.18.

Affected (CNA)

Vendor / product	Versions
honojs / hono	affected < 4.12.18

CWE

CWE-524

References

https://github.com/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rm

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.