Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinct by the browser may be normalized to the same key by parse(), allowing attacker-controlled cookies to override legitimate ones. This vulnerability is fixed in 4.12.12.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| honojs | hono | < 4.12.12 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | langfuse-3-worker | 3.164.0-r5 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | hono | < 4.12.12 | 4.12.12 | GHSA-r5rp-j6wh-rvv4 |
Advisories 1
- WID-SEC-2026-1407 IBM App Connect Enterprise Certified Container: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 3, 2026