Answer in brief
CVE-2026-69215 records a Medium severity (CVSS 6.8) vulnerability in Http4s: CookieJar middleware matches by substring, leaking cookies cross-origin. The current sources do not mark it as known exploited. The current feed maps http4s/http4s (generic), org.http4s:http4s-client_2.12 (maven), org.http4s:http4s-client_2.13 (maven), org.http4s:http4s-client_2.13 (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps http4s/http4s (generic), org.http4s:http4s-client_2.12 (maven), org.http4s:http4s-client_2.13 (maven), org.http4s:http4s-client_2.13 (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| http4s/http4sgeneric | < 0.23.35 || >= 1.0.0-M1, < 1.0.0-M47 | Not reported |
| org.http4s:http4s-client_2.12maven | <=0.23.34 | 0.23.35 |
| org.http4s:http4s-client_2.13maven | <=0.23.34 | 0.23.35 |
| org.http4s:http4s-client_2.13maven | >=1.0.0-M1,<=1.0.0-M46 | 1.0.0-M47 |
| org.http4s:http4s-client_3maven | <=0.23.34 | 0.23.35 |
| org.http4s:http4s-client_3maven | >=1.0.0-M1,<=1.0.0-M46 | 1.0.0-M47 |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.