Description
guzzlehttp/guzzle versions before 7.15.1 contain a denial of service vulnerability in the CookieJar that accepts unlimited Set-Cookie header fields with no size restrictions. Attackers can return many large cookies from a malicious server, causing Guzzle to store excessive data in memory and generate oversized Cookie headers that fail in handlers or destination servers.
CVSS 5.3EPSS 0.247%Risk 0.54
View source- Published
- 2026-08-01 13:17:06
- Affected versions
- <7.15.1
- Type
- Library
- Last modified
- 2026-08-03 19:16:53
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L