All vulnerabilities

CVE-2026-6276

stale custom cookie host causes cookie leak

Description

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.

Patch Available

Fix available through Seal Security. No upgrade required, protect your application instantly.

Fix without upgrading
Score
7.5
Severity
High
Ecosystem
APK
Publish Date
April 29, 2026
Modified Date
May 26, 2026
Score Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Versions