CVE-2025-58186

5.3 MEDIUM
Published: October 29, 2025 Modified: November 04, 2025

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://go.dev/cl/709855
Source: security@golang.org
https://go.dev/issue/75672
Source: security@golang.org
https://pkg.go.dev/vuln/GO-2025-4012
Source: security@golang.org
http://www.openwall.com/lists/oss-security/2025/10/08/1
Source: af854a3a-2127-422b-91ae-364da2661108

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.0%
8th percentile
Exploitation Status
Not in CISA KEV