VULNERABILITY INTELLIGENCE
CVE-2025-58186
CVSS score5.3 MEDIUM
EPSS probability0.56%
CISA KEVNot currently listed
Published2025-10-29
Last modified2026-10-11
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
Despite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.