Vulnerability in Jahlives OpenSSL Encrypt
CVE-2026-81718
openssl_encrypt versions before 1.4.9 use under-parameterized PBKDF2-HMAC-SHA256 with only 100,000 iterations to protect PQC keyfile private keys and 10,000 iterations for dual-encryption file-password verification. Attackers who obtain keyfiles or encrypted files can brute-force wrapping passwords offline using GPU or ASIC acceleration.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (5.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-fmjx-p826-6fvr) (vendor-advisory)
- VulnCheck Advisory: openssl_encrypt before 1.4.9 Weak Cryptographic Parameters (third-party-advisory)
Frequently asked questions
- What is CVE-2026-81718?
- CVE-2026-81718 is a high-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2026-08-27.
- How severe is CVE-2026-81718?
- High severity. CVSS v3 base score is 7.5 out of 10.