CVE-2026-32281

Aliases:GO-2026-4946BIT-golang-2026-32281
Advisory lineage Upstream: 0 Downstream: 32
Analyzed
Published: 08 Apr 2026, 01:06
Last modified:13 Apr 2026, 18:19

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Apr 2026, 01:06
Published
Vulnerability first disclosed
13 Apr 2026, 18:19
Last Modified
Vulnerability information updated

Description

Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Techniques & Countermeasures

  • CWE-295•Improper Certificate Validation

    The product does not validate, or incorrectly validates, a certificate.

Affected Systems

  • go standard library•crypto/x509

    < 1.25.9 | ≥ 1.26.0-0, < 1.26.2

  • golang•go

    < 1.25.9 | ≥ 1.26.0, < 1.26.2

  • Go•stdlib

    ≥ 1.26.0-0, < 1.26.2

References (4)