CVE-2026-44457

MEDIUM

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

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 5.3
EPSS 0.0004
EPSS Percentile 11.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-524
Status published
Products (3)
hono/hono < 4.12.18
honojs/hono < 4.12.18
npm/hono 0 - 4.12.18npm
Published May 13, 2026
Tracked Since May 13, 2026