# org.http4s:http4s-client\_2.12 (Maven) vulnerabilities

3 known vulnerabilities (1 high, 2 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://central.sonatype.com/artifact/org.http4s/http4s-client_2.12

## Advisories (3)

### [CVE-2026-69215](https://cve.now/CVE-2026-69215): Http4s: CookieJar middleware matches by substring, leaking cookies cross-origin

- Severity: Medium 6.8
- Published: Sep 15, 2026
- Affected: fixed in 0.23.35.

### [CVE-2026-69214](https://cve.now/CVE-2026-69214): Http4s: CookieJar middleware accepts arbitrary Set-Cookie domain

- Severity: Medium 6.8
- Published: Sep 15, 2026
- Affected: fixed in 0.23.35.

### [CVE-2021-41084](https://cve.now/CVE-2021-41084): Response Splitting from unsanitized headers in http4s

- Severity: High 8.7
- Published: Sep 21, 2021
- Affected: fixed in 0.21.29; from 0.22.0, fixed in 0.22.5; from 0.23.0, fixed in 0.23.4.

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