Resource exhaustion in Jahlives OpenSSL Encrypt
CVE-2026-81687
openssl_encrypt versions before 1.4.9 fail to enforce a time ceiling on key derivation function iteration counts specified in file metadata. Attackers can craft files with extremely high KDF iteration counts to consume CPU resources for unbounded periods before password verification occurs.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.0% 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
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-rv6w-7hq9-pr74) (vendor-advisory)
- VulnCheck Advisory: openssl_encrypt before 1.4.9 Denial of Service via KDF (third-party-advisory)
Frequently asked questions
- What is CVE-2026-81687?
- CVE-2026-81687 is a medium-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2026-08-27.
- How severe is CVE-2026-81687?
- Medium severity. CVSS v3 base score is 5.5 out of 10.