CVE-2025-58186

MEDIUM EPSS 41.0%
Published Oct 29, 20258mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Oct 29, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
41.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

References 5

  • openwall.com http://www.openwall.com/lists/oss-security/2025/10/08/1
  • go.dev https://go.dev/cl/709855
  • go.dev https://go.dev/issue/75672
  • groups.google.com https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI
  • pkg.go.dev https://pkg.go.dev/vuln/GO-2025-4012

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.