High severity7.5NVD Advisory· Published Mar 2, 2026· Updated Jul 15, 2026
CVE-2026-3336
CVE-2026-3336
Description
Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer.
Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
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Affected products
4Patches
Vulnerability mechanics
References
7- aws.amazon.com/security/security-bulletins/2026-005-AWS/nvdVendor Advisory
- github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvpnvdVendor Advisory
- github.com/aws/aws-lc/releases/tag/v1.69.0nvdRelease Notes
- access.redhat.com/errata/RHSA-2026:5459nvd
- access.redhat.com/security/cve/CVE-2026-3336nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3336.jsonnvd
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