CVEvulnerability
CVE-2025-58186
5.3 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2025-10-29
- Last modified
- 2026-10-11
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.3 MEDIUM — CVSS: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.
References
- https://go.dev/cl/709855 go.dev
- https://go.dev/issue/75672 go.dev
- https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI groups.google.com
- https://pkg.go.dev/vuln/GO-2025-4012 pkg.go.dev
- http://www.openwall.com/lists/oss-security/2025/10/08/1 www.openwall.com