GHSA-vw5v-4f2q-w9xf

Suggest an improvement
Source
https://github.com/advisories/GHSA-vw5v-4f2q-w9xf
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-vw5v-4f2q-w9xf/GHSA-vw5v-4f2q-w9xf.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-vw5v-4f2q-w9xf
Aliases
Downstream
CGA (76)
MINI (16)
Published
2026-03-03T20:08:24Z
Modified
2026-09-10T03:50:41Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
AWS-LC has PKCS7_verify Certificate Chain Validation Bypass
Details

Summary

AWS-LC is an open-source, general-purpose cryptographic library.

Impact

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. aws-lc-sys contains code from AWS-LC. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys.

Impacted versions:

aws-lc-sys versions: >= 0.24.0, < 0.38.0

Patches

The patch is included in v0.38.0

Workarounds

There is no workaround. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys.

Resources

If there are any questions or comments about this advisory, contact [AWS/Amazon] Security via the vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

Acknowledgement

AWS-LC would like to thank Joshua Rogers (https://joshua.hu/) for collaborating on this issue through the coordinated vulnerability disclosure process.

Database specific 
{
    "cwe_ids":  [
        "CWE-295"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-03T20:08:24Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

crates.io / aws-lc-sys

Package

Name
aws-lc-sys
View open source insights on deps.dev
Purl
pkg:cargo/aws-lc-sys

Affected 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"