{"id":"GHSA-vw5v-4f2q-w9xf","summary":"AWS-LC has PKCS7_verify Certificate Chain Validation Bypass","details":"### Summary\nAWS-LC is an open-source, general-purpose cryptographic library.\n\n### Impact\nImproper 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.\n\nCustomers of AWS services do not need to take action. aws-lc-sys contains code from AWS-LC. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys.\n\n#### Impacted versions: \naws-lc-sys versions: \u003e= 0.24.0, \u003c 0.38.0\n\n### Patches\nThe patch is included in v0.38.0\n\n### Workarounds\nThere is no workaround. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys.\n\n### Resources\nIf there are any questions or comments about this advisory, contact [AWS/Amazon] Security via the [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.\n\n### Acknowledgement\nAWS-LC would like to thank Joshua Rogers (https://joshua.hu/) for collaborating on this issue through the coordinated vulnerability disclosure process.","aliases":["CVE-2026-3336","GHSA-cfwj-9wp5-wqvp","RUSTSEC-2026-0046"],"modified":"2026-07-17T21:06:10.103289155Z","published":"2026-03-03T20:08:24Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-03-03T20:08:24Z","nvd_published_at":null,"cwe_ids":["CWE-295"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/aws/aws-lc-rs/security/advisories/GHSA-vw5v-4f2q-w9xf"},{"type":"WEB","url":"https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3336"},{"type":"WEB","url":"https://aws.amazon.com/security/security-bulletins/2026-005-AWS"},{"type":"PACKAGE","url":"https://github.com/aws/aws-lc-rs"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0046.html"}],"affected":[{"package":{"name":"aws-lc-sys","ecosystem":"crates.io","purl":"pkg:cargo/aws-lc-sys"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.24.0"},{"fixed":"0.38.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-vw5v-4f2q-w9xf/GHSA-vw5v-4f2q-w9xf.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}]}