CVE-2026-3338

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Source
https://cve.org/CVERecord?id=CVE-2026-3338
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3338.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-3338
Aliases
Published
2026-03-02T21:22:41.954Z
Modified
2026-07-22T03:29:50.066640Z
Severity
  • 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
PKCS7_verify Signature Validation Bypass in AWS-LC
Details

Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes.

Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.

Database specific 
{
    "cna_assigner": "AMZN",
    "cwe_ids": [
        "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3338.json"
}
References

Affected packages

Git / github.com/aws/aws-lc

Affected ranges

Type
GIT
Repo
https://github.com/aws/aws-lc
Events
Introduced
dd5948b5a55f5dc5f0db9bbfa0e21c35d9e820e2
Fixed
37d86461a95782fd5d8b77873f9e1cb134ea2f95
Database specific 
{
    "extracted_events": [
        {
            "introduced": "1.41.0"
        },
        {
            "fixed": "1.69.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:amazon:aws_libcrypto:*:*:*:*:*:*:*:*"
}

Affected versions

AWS-LC-FIPS-NETOS-v1.*
AWS-LC-FIPS-NETOS-v1.29.1
v1.*
v1.41.0
v1.41.1
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.46.1
v1.47.0
v1.48.0
v1.48.1
v1.48.2
v1.48.3
v1.48.4
v1.48.5
v1.49.0
v1.49.1
v1.50.0
v1.50.1
v1.51.0
v1.51.1
v1.51.2
v1.52.0
v1.52.1
v1.53.0
v1.53.1
v1.54.0
v1.55.0
v1.56.0
v1.57.0
v1.57.1
v1.58.0
v1.58.1
v1.59.0
v1.60.0
v1.61.0
v1.61.1
v1.61.2
v1.61.3
v1.61.4
v1.62.0
v1.62.1
v1.63.0
v1.64.0
v1.65.0
v1.65.1
v1.66.0
v1.66.1
v1.66.2
v1.67.0
v1.68.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3338.json"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "crypto/pkcs7/pkcs7.c"
        },
        "id": "CVE-2026-3338-855e3c0b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "280062061547051961335040704369984099310",
                "59664889025735122861240116516903930146",
                "186491128754061308478941699848016839286",
                "44181818329089001225657707026569626534",
                "282671460555005303787248492658194669900",
                "44166289732973386761265031133498341556",
                "69817426707179551398336772625900832321",
                "239604874112229803444893855053965253409"
            ]
        },
        "deprecated": false,
        "source": "https://github.com/aws/aws-lc/commit/37d86461a95782fd5d8b77873f9e1cb134ea2f95"
    },
    {
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "function": "pkcs7_signature_verify",
            "file": "crypto/pkcs7/pkcs7.c"
        },
        "id": "CVE-2026-3338-dc456f72",
        "digest": {
            "function_hash": "158135805622728784577576606639969624490",
            "length": 2013.0
        },
        "deprecated": false,
        "source": "https://github.com/aws/aws-lc/commit/37d86461a95782fd5d8b77873f9e1cb134ea2f95"
    }
]
vanir_signatures_modified 
"2026-07-22T03:29:50Z"