What is CVE-2026-74871?

CVE-2026-74871 is a medium-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Use of Password Hash With Insufficient Computational Effort. CVSS score: 6.2/10. Published 2026-08-17.

How severe is CVE-2026-74871?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in Jahlives OpenSSL Encrypt

CVE-2026-74871

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.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Jahlives Openssl_encrypt — versions 0, 1.4.6

Weakness classification (CWE)

CWE-916 — Use of Password Hash With Insufficient Computational Effort

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-74871?: CVE-2026-74871 is a medium-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Use of Password Hash With Insufficient Computational Effort. CVSS score: 6.2/10. Published 2026-08-17.
How severe is CVE-2026-74871?: Medium severity. CVSS v3 base score is 6.2 out of 10.