medium6.8
CVE-2026-69214
Http4s: CookieJar middleware accepts arbitrary Set-Cookie domain
Impact
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The CookieJar client middleware stores a response cookie’s Domain attribute without checking that it domain-matches the host that supplied the cookie or rejecting public suffixes. A malicious or compromised server contacted through the same CookieJar can plant a cookie for another domain, and the jar later sends that cookie to the victim domain, enabling session fixation or overwriting security-sensitive cookies. The patch validates the Set-Cookie domain against the response origin, although public-suffix rejection remains unimplemented. This issue is fixed in versions 0.23.35 and 1.0.0-M47.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.http4s:http4s-client_2.12 | <= 0.23.34 | 0.23.35 |
| maven | org.http4s:http4s-client_2.13 | <= 0.23.34 | 0.23.35 |
| maven | org.http4s:http4s-client_3 | >= 1.0.0-M1, <= 1.0.0-M46 | 1.0.0-M47 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-wv64-j4fq-5f9x
- https://github.com/http4s/http4s/security/advisories/GHSA-wv64-j4fq-5f9x
- https://github.com/http4s/http4s/commit/87535f7288f3baaf6736e2735087e473762b5b2f
- https://github.com/http4s/http4s/releases/tag/v0.23.35
- https://github.com/http4s/http4s/releases/tag/v1.0.0-M47