CVE-2026-74871

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Source

https://cve.org/CVERecord?id=CVE-2026-74871

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74871.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-74871

Aliases

GHSA-vxf9-vwp6-2w43
PYSEC-2026-3976

Published

2026-08-17T11:04:40Z

Modified

2026-09-12T03:47:02Z

Severity

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

Summary

openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR

Details

openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-916"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74871.json"
}

References

Affected packages

Git / github.com/jahlives/openssl_encrypt

Affected ranges

Type

GIT

Repo

https://github.com/jahlives/openssl_encrypt

Events

Introduced

Fixed

805ee093ec87b8426235df9077ef8d6bd41f15cb

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.4.6"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v1.*

v1.4.0

v1.4.1rc1

v1.4.1rc2

v1.4.2

v1.4.4

v1.4.5

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74871.json"