CVSS 3.1
6.8 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:NCVE-2026-69215
Medium (6.8). EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.http4s:http4s-client_2.12 0.23.35.
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The CookieJar client middleware uses unanchored substring checks instead of RFC 6265 domain and path matching when deciding whether to attach a stored cookie. A cookie for example.com can consequently be sent to an attacker-controlled hostname such as evilexample.com when an application using the same jar makes an attacker-influenced outbound request. This exposes session or authentication cookies and can enable hijacking of the application’s outbound sessions. This issue is fixed in versions 0.23.35 and 1.0.0-M47.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-565, CWE-1275
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-grh8-3p95-f9rr | Maven | org.http4s:http4s-client_2.12 | <0.23.35 | 0.23.35 |
| GHSA-grh8-3p95-f9rr | Maven | org.http4s:http4s-client_2.13 | <0.23.35 | 0.23.35 |
| GHSA-grh8-3p95-f9rr | Maven | org.http4s:http4s-client_3 | <0.23.35 | 0.23.35 |
| GHSA-grh8-3p95-f9rr | Maven | org.http4s:http4s-client_2.13 | >=1.0.0-M1 <1.0.0-M47 | 1.0.0-M47 |
| GHSA-grh8-3p95-f9rr | Maven | org.http4s:http4s-client_3 | >=1.0.0-M1 <1.0.0-M47 | 1.0.0-M47 |