CVE-2026-69214
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.
How to fix
- org.http4s:http4s-client_2.120.23.35 or later
- org.http4s:http4s-client_2.130.23.35, 1.0.0-M47 or later
- org.http4s:http4s-client_31.0.0-M47, 0.23.35 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| org.http4s:http4s-client_2.12Maven | v < 0.23.35 | 0.23.35 |
| org.http4s:http4s-client_2.13Maven | v < 0.23.35, 1.0.0-M1 ≤ v < 1.0.0-M47 | 0.23.35, 1.0.0-M47 |
| org.http4s:http4s-client_3Maven | 1.0.0-M1 ≤ v < 1.0.0-M47, v < 0.23.35 | 1.0.0-M47, 0.23.35 |
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Attack Surface Management
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