Home/CVE/During chain building, the amount of work that is done is not correctly limited when a large number of intermediate cert
CVE

CVE-2026-32280

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate cert

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.

HIGH · CVSS 7.5 EPSS 0.00021
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

2
golang go< 1.25.9
golang go>= 1.26.0 and < 1.26.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go stdlib fixed in 1.25.9, 1.26.2
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security@golang.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Apr 2026 · 02:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

30
rhsaRHSA-2026:21338Important
rhsaRHSA-2026:21769Important
rhsaRHSA-2026:22347Important
rhsaRHSA-2026:13545Important
suse-csafopenSUSE-SU-2026:10664-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://go.dev/cl/758320Patch
https://go.dev/issue/78282Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing ListRelease Notes
https://pkg.go.dev/vuln/GO-2026-4947Vendor Advisory
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