What is CVE-2026-81689?

CVE-2026-81689 is a high-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Use of Password Hash With Insufficient Computational Effort. CVSS score: 7.5/10. Published 2026-08-27.

How severe is CVE-2026-81689?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Jahlives OpenSSL Encrypt

CVE-2026-81689

openssl_encrypt versions before 1.4.9 derive the remote-pepper wrap key using unsalted HKDF-SHA256 or bare SHA-256 of the password, allowing identical keys across all users and files. Attackers with access to wrapped pepper blobs can precompute a single dictionary table and perform fleet-wide offline password guessing at hardware speed to recover user passwords.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Jahlives Openssl_encrypt

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-2026-81689?: CVE-2026-81689 is a high-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Use of Password Hash With Insufficient Computational Effort. CVSS score: 7.5/10. Published 2026-08-27.
How severe is CVE-2026-81689?: High severity. CVSS v3 base score is 7.5 out of 10.