{"id":"CVE-2025-58186","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-58186","generatedAt":"2026-10-28T03:30:26.258Z","title":"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.","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.","published":"2025-10-29T23:16:20.000Z","lastModified":"2026-10-11T20:10:00.000Z","status":"Deferred","sourceIdentifier":"security@golang.org","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":[],"affected":[],"epss":{"score":0.00565,"percentile":0.46648,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.56%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://go.dev/cl/709855","source":"security@golang.org"},{"url":"https://go.dev/issue/75672","source":"security@golang.org"},{"url":"https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI","source":"security@golang.org"},{"url":"https://pkg.go.dev/vuln/GO-2025-4012","source":"security@golang.org"},{"url":"http://www.openwall.com/lists/oss-security/2025/10/08/1","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-58186","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}