Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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
- https://github.com/http4s/http4s/security/advisories/GHSA-wv64-j4fq-5f9x
FAQ
What is CVE-2026-69214?
CVE-2026-69214 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 h...
How severe is CVE-2026-69214?
CVE-2026-69214 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-69214?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.