Use of Cache Containing Sensitive Information Affecting hono package, versions >=2.0.3 <4.12.18
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-HONO-16624532
- published10 May 2026
- disclosed9 May 2026
- creditDanny-Devs
Introduced: 9 May 2026
NewCVE-2026-44457 (opens in a new tab)How to fix?
Upgrade hono to version 4.12.18 or higher.
Overview
hono is an Ultrafast web framework for the Edges
Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information through the cache process in the cache middleware. An attacker can cause responses to be cached or served incorrectly by sending requests that elicit Vary headers, Authorization headers, or non-GET methods. As a result, users can receive stale or cross-request content, and authenticated or method-specific responses can be stored or reused in ways that break application behavior and expose the wrong response body.
Workarounds
- Avoid using the cache middleware on endpoints that return authenticated or per-user content unless you can mark those responses as non-cacheable; this prevents cross-user cache leakage and stale user-specific bodies.