VDB

ALPINE-CVE-2025-9086

ALPINE-CVE-2025-9086 PUBLISHED CVSS 7.5 HIGH

1. A cookie is set using the `secure` keyword for `https://target` 2. curl is redirected to or otherwise made to speak with `http://target` (same hostname, but using clear text HTTP) using the same cookie set 3. The same cookie name is set - but with just a slash as path (`path=\"/\",`). Since this site is not secure, the cookie *should* just be ignored. 4. A bug in the path comparison logic makes curl read outside a heap buffer boundary The bug either causes a crash or it potentially makes the comparison come to the wrong conclusion and lets the clear-text site override the contents of the secure cookie, contrary to expectations and depending on the memory contents immediately following the single-byte allocation that holds the path. The presumed and correct behavior would be to plainly ignore the second set of the cookie since it was already set as secure on a secure host so overriding it on an insecure host should not be okay.

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.23curl8.1.0-r1, 8.1.0-r2, 7.86.0-r0
Alpine:v3.22curl7.62.0-r0, 7.21.4-r1, 7.21.3-r0
Alpine:v3.19curl0, 7.19.2-r1, 7.19.5-r0
Alpine:v3.20curl7.21.7-r0, 7.21.7-r1, 7.21.7-r2
Alpine:v3.21curl8.9.1-r2, 8.9.1-r1, 8.9.1-r0

Timeline

  • Sep 12, 2025 CVE Published
  • Jan 9, 2026 CVE Updated
  • Apr 30, 2026 Distribution Patch
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