CVE-2026-44457 json
Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage
published 6mo ago modified 14d ago also GHSA-p77w-8qqv-26rm , EUVD-2026-30036
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm hono 4.12.18
- hono hono 4.12.18
Is CVE-2026-44457 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | hono | <4.12.18 |
4.12.18 |
Affected products
- honojs hono
Classification
- Weakness
-
- CWE-524 Use of Cache Containing Sensitive Information
References
-
github.com
/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rm
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44457
advisory
-
github.com
/honojs/hono
package
Sources
- CVE List CVE-2026-44457
- GitHub Advisory GHSA-p77w-8qqv-26rm
- NVD CVE-2026-44457
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.