CVE-2026-32281: CWE-407: Inefficient Algorithmic Complexity in Go standard library crypto/x509
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.
AI Analysis
Technical Summary
The vulnerability involves inefficient algorithmic complexity in the Go standard library's crypto/x509 package when validating certificate chains that contain certificates with a very large number of policy mappings. This inefficiency can cause denial of service by significantly slowing down the validation process. The issue affects validation of certificate chains that are otherwise trusted, specifically those issued by root CAs present in the VerifyOptions.Roots CertPool or the system certificate pool. No CVSS score or patch information is currently available.
Potential Impact
The impact is a potential denial of service condition during certificate chain validation in applications using the affected versions of the Go crypto/x509 package. This could degrade service availability when processing certificates with many policy mappings. There are no reports of active exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting the acceptance of certificates with excessive policy mappings or implementing application-level timeouts on certificate validation to mitigate potential denial of service.
CVE-2026-32281: CWE-407: Inefficient Algorithmic Complexity in Go standard library crypto/x509
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability involves inefficient algorithmic complexity in the Go standard library's crypto/x509 package when validating certificate chains that contain certificates with a very large number of policy mappings. This inefficiency can cause denial of service by significantly slowing down the validation process. The issue affects validation of certificate chains that are otherwise trusted, specifically those issued by root CAs present in the VerifyOptions.Roots CertPool or the system certificate pool. No CVSS score or patch information is currently available.
Potential Impact
The impact is a potential denial of service condition during certificate chain validation in applications using the affected versions of the Go crypto/x509 package. This could degrade service availability when processing certificates with many policy mappings. There are no reports of active exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting the acceptance of certificates with excessive policy mappings or implementing application-level timeouts on certificate validation to mitigate potential denial of service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-03-11T16:38:46.556Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5da2d43e2781badfbe684
Added to database: 4/8/2026, 4:31:41 AM
Last enriched: 4/8/2026, 4:47:09 AM
Last updated: 4/8/2026, 10:07:08 AM
Views: 8
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