Riskcovery

CVE-2026-32280

Unexpected work during chain building in crypto/x509

State
Published
Severity
7.5 High
Published
Apr 8, 2026
Updated
Sep 18, 2026
Reserved
Mar 11, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
crypto/x509Go standard library
  • before 1.25.9Affected
  • 1.26.0-0 to before 1.26.2Affected

References

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