Vulnerability in Jahlives OpenSSL Encrypt
CVE-2026-74889
openssl_encrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (26.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Jahlives OpenSSL Encrypt — versions 0, 1.4.0
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-j9mh-57cc-665x) (vendor-advisory, Mitigation, Vendor Advisory)
- VulnCheck Advisory: openssl_encrypt before 1.4.0 Weak Key Derivation via HKDF (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-74889?
- CVE-2026-74889 is a critical-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2026-08-17.
- How severe is CVE-2026-74889?
- Critical severity. CVSS v3 base score is 9.8 out of 10.