CVE-2026-74890

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Source

https://cve.org/CVERecord?id=CVE-2026-74890

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74890.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-74890

Aliases

GHSA-rvc2-5jxq-gpcj
PYSEC-2026-3766

Published

2026-08-17T11:04:53Z

Modified

2026-09-03T03:48:18Z

Severity

9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

openssl_encrypt before 1.4.0 HMAC Authentication Bypass via Environment Variable

Details

openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that disables HMAC tag generation and verification when the PYTEST_CURRENT_TEST environment variable is set. Attackers with code execution can set this environment variable to produce unauthenticated ciphertext and bypass integrity protection on encrypted data.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74890.json"
}

References

Affected packages

Git / github.com/jahlives/openssl_encrypt

Affected ranges

Type

GIT

Repo

https://github.com/jahlives/openssl_encrypt

Events

Introduced

Fixed

768df5cd1910e349509f07a27eeac6951e0003bf

Database specific

Show details

{
    "cpe": "cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.4.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74890.json"