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
2026-03-02T22:16:32.350Z
Modified
2026-03-20T17:25:59.250880Z
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
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.

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 
{
    "versions": [
        {
            "introduced": "1.41.0"
        },
        {
            "fixed": "1.69.0"
        }
    ]
}

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"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0.24.0"
            },
            {
                "fixed": "0.38.0"
            }
        ]
    }
]
vanir_signatures 
[
    {
        "deprecated": false,
        "signature_type": "Line",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "280062061547051961335040704369984099310",
                "59664889025735122861240116516903930146",
                "186491128754061308478941699848016839286",
                "44181818329089001225657707026569626534",
                "282671460555005303787248492658194669900",
                "44166289732973386761265031133498341556",
                "69817426707179551398336772625900832321",
                "239604874112229803444893855053965253409"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/aws/aws-lc/commit/37d86461a95782fd5d8b77873f9e1cb134ea2f95",
        "id": "CVE-2026-3338-855e3c0b",
        "target": {
            "file": "crypto/pkcs7/pkcs7.c"
        }
    },
    {
        "deprecated": false,
        "signature_type": "Function",
        "signature_version": "v1",
        "digest": {
            "function_hash": "158135805622728784577576606639969624490",
            "length": 2013.0
        },
        "source": "https://github.com/aws/aws-lc/commit/37d86461a95782fd5d8b77873f9e1cb134ea2f95",
        "id": "CVE-2026-3338-dc456f72",
        "target": {
            "file": "crypto/pkcs7/pkcs7.c",
            "function": "pkcs7_signature_verify"
        }
    }
]