CVE-2026-44457— Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-44457
Vulnerability Information
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Vulnerability Title
Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过缓存导致的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Hono 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.12.18之前版本存在安全漏洞，该漏洞源于缓存中间件未跳过对声明每用户差异的响应的缓存，可能导致一个已认证用户的缓存响应被提供给后续不同用户的请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-44457
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- https://github.com/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rmx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-44457
Same Patch Batch · honojs · 2026-05-13 · 5 CVEs total
| CVE-2026-44456 | 6.5 MEDIUM | Hono: bodyLimit() can be bypassed for chunked / unknown-length requests |
| CVE-2026-44455 | 4.7 MEDIUM | Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection |
| CVE-2026-44458 | 4.3 MEDIUM | Hono: CSS Declaration Injection via Style Object Values in JSX SSR |
| CVE-2026-44459 | 3.8 LOW | Hono: Improper validation of NumericDate claims (exp, nbf, iat) in JWT verify() |
IV. Related Vulnerabilities
Same product: hono
- CVE-2026-44459
Hono: Improper validation of NumericDate claims (exp, nbf, i - CVE-2026-44458
Hono: CSS Declaration Injection via Style Object Values in J - CVE-2026-44456
Hono: bodyLimit() can be bypassed for chunked / unknown-leng - CVE-2026-44455
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML I - CVE-2026-39410
Hono has a non-breaking space prefix bypass in cookie name h
Same vendor: honojs
- CVE-2026-44459
Hono: Improper validation of NumericDate claims (exp, nbf, i - CVE-2026-44458
Hono: CSS Declaration Injection via Style Object Values in J - CVE-2026-44456
Hono: bodyLimit() can be bypassed for chunked / unknown-leng - CVE-2026-44455
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML I - CVE-2026-39410
Hono has a non-breaking space prefix bypass in cookie name h
Same weakness: CWE-524
- CVE-2026-6907
Potential exposure of private data due to incorrect handling - CVE-2026-22741
Static resource cache poisoning in Spring MVC and WebFlux - CVE-2025-14806
IBM Planning Analytics Information Disclosure - CVE-2026-27205
Flask session does not add `Vary: Cookie` header when access - CVE-2026-25540
Mastodon's signature-dependent ActivityPub collection respon
V. Comments for CVE-2026-44457
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