CVE-2026-32280 — Allocation of Resources Without Limits or Throttling in Standard Library Crypto X509
Severity
7.5HIGHNVD
EPSS
0.0%
top 94.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 8
Latest updateApr 13
Description
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages1 packages
🔴Vulnerability Details
5VulDB▶
crypto-x509 up to 1.25.8/1.26.1 on Go Certificate allocation of resources (Nessus ID 305615 / WID-SEC-2026-1006)↗2026-04-13
GHSA▶
GHSA-m4pr-4j3g-9v7v: During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyO↗2026-04-08
OSV▶
CVE-2026-32280: During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyO↗2026-04-08
📋Vendor Advisories
1Debian▶
CVE-2026-32280: golang-1.15 - During chain building, the amount of work that is done is not correctly limited ...↗2026
🕵️Threat Intelligence
1💬Community
1Bugzilla▶
CVE-2026-32280 golang: Go: Denial of Service vulnerability in certificate chain building [fedora-all]↗2026-04-13