CVE-2026-69212
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The FollowRedirect client middleware strips Authorization and Cookie headers only when a redirect changes authority, but authority comparison excludes the URI scheme. A same-authority redirect from HTTPS to HTTP therefore preserves credentials and transmits them over a plaintext connection. An attacker who can induce the downgrade and observe the network can capture those sensitive headers from applications using FollowRedirect. This issue is fixed in versions 0.23.35 and 1.0.0-M47.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.9
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CWE
- CWE-200, CWE-319
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- http4s http4s
- http4s http4s
Weakness type
Related vulnerabilities
- CVE-2026-87820 — CyberPanel 2.4.3 through 2.4.5 Information Disclosure via AI Scanner
- CVE-2026-86464 — In the current development version of Eclipse aeriOS, for which no official release has yet been published, the Identity
- CVE-2026-87541 — Information leak in Navigation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the
- CVE-2026-78960 — Information leak in Extensions in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engin
- CVE-2026-87593 — Information leak in Editing in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive inform
- CVE-2026-87565 — Information leak in Passwords in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker to leak se
- CVE-2026-87545 — Information leak in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leveraging social
- CVE-2026-87490 — Information leak in Transactions Platform in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain se