Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.11.4, there is a flaw in Hono’s JWK/JWKS JWT verification middleware allowed the algorithm specified in the JWT header to influence signature v…
Historical advisory saved 1 Nov 2026 03:08:13 UTC. The publisher may have updated it since then. Latest advisory.
euvd · EUVD-2026-2017
PublishedHono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.11.4, there is a flaw in Hono’s JWK/JWKS JWT verification middleware allowed the algorithm specified in the JWT header to influence signature verification when the selected JWK did not explicitly define an algorithm. This could enable JWT algorithm confusion and, in certain configurations, allow forged tokens to be accepted. The JWK/JWKS JWT verification middleware has been updated to require an explicit allowlist of asymmetric algorithms when verifying tokens. The middleware no longer derives the verification algorithm from untrusted JWT header values. This vulnerability is fixed in 4.11.4.
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datePublished: Jan 13, 2026, 7:49:52 PM
dateUpdated: Jan 15, 2026, 3:29:39 PM
1 related source bulletins · separate from aliases
WID-SEC-W-2026-0328: IBM App Connect Enterprise Certified Container: Mehrere Schwachstellen
CVE-2025-13491 · CVE-2025-61727 · CVE-2025-61729 · CVE-2026-0621 · CVE-2026-21226 · CVE-2026-22817 · CVE-2026-22818
- Source published
- Jan 13, 2026, 7:49:52 PM (timezone not stated)
- Source modified
- Jan 15, 2026, 3:29:39 PM (timezone not stated)
- Saved here
- 1 Nov 2026 03:08:13 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 3.1 · 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N