What’s Vulnerable › Vulnerabilities

CVE-2026-24472: Hono cache middleware ignores "Cache-Control: private" leading to Web Cache Deception

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-27 · updated 2026-06-17
• Weakness: CWE-524

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, Cache Middleware contains an information disclosure vulnerability caused by improper handling of HTTP cache control directives. The middleware does not respect standard cache control headers such as `Cache-Control: private` or `Cache-Control: no-store`, which may result in private or authenticated responses being cached and subsequently exposed to unauthorized users. Version 4.11.7 has a patch for the issue.

Affected products

• honojs hono: before 4.11.7 — fixed in 4.11.7

How to fix

Upgrade to a fixed version: honojs hono 4.11.7. Check the vendor advisory for mitigations.

References

• https://github.com/honojs/hono/commit/12c511745b3f1e7a3f863a23ce5f921c7fa805d1
• https://github.com/honojs/hono/releases/tag/v4.11.7
• https://github.com/honojs/hono/security/advisories/GHSA-6wqw-2p9w-4vw4

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