Hono cache middleware ignores "Cache-Control: private" leading to Web Cache Deception
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-613.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| honojs | hono | before 4.11.7 | 4.11.7 | Patch available | CNA |
| — | hono (npm) | before 4.11.7 | 4.11.7 | Patch available | GHSA-6wqw-2p9w-4vw4 |
- hono Vendorhonojs Affected before 4.11.7 Fixed in 4.11.7 Patch available CNA
- hono (npm) Vendor— Affected before 4.11.7 Fixed in 4.11.7 Patch available GHSA-6wqw-2p9w-4vw4
Remediation
- Fix · CNA hono (honojs) Fixed in 4.11.7
- Fix · GHSA-6wqw-2p9w-4vw4 hono (npm) Fixed in 4.11.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24472
- 2026-10-03 Alias added: GHSA-6wqw-2p9w-4vw4
References
Advisory 2
More honojs Hono vulnerabilities
- TI-2024-21741 Hono vulnerable to Restricted Directory Traversal in serveStatic with deno CVSS 3.1MEDIUM 5.3
- TI-2024-32610 Hono vulnerable to bypass of CSRF Middleware by a request without Content-Type header. CVSS 3.1MEDIUM 5.9
- TI-2024-29381 Hono CSRF middleware can be bypassed using crafted Content-Type header CVSS 3.1MEDIUM 5.0
- TI-2026-23190 Hono: Arbitrary file access via serveStatic vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-22076 Hono is Vulnerable to Authentication Bypass by IP Spoofing in AWS Lambda ALB conninfo CVSS 3.1HIGH 8.2
- TI-2026-18334 JWT algorithm confusion in Hono JWK Auth Middleware when JWK lacks "alg" (untrusted header.alg fallback) CVSS 3.1HIGH 8.2
Sources
- CVE-2026-24472 · CVE Program
- CVE-2026-24472 · NVD
- FIRST EPSS
- GHSA-6wqw-2p9w-4vw4 · GitHub Advisory Database · CC BY 4.0
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