Vulnerability in Jahlives OpenSSL Encrypt
CVE-2026-81717
openssl_encrypt (pip package openssl-encrypt) before 1.4.9 contains two weaknesses in the portable USB drive feature, whose threat model treats the removable drive as untrusted (attacker with physical write access). USBDriveCreator._verify_integrity_file only validates files listed in the manifest, so files added to the drive — including a root-level autorun payload — are not detected and integrity verification still passes. Additionally, a globally constant, source-embedded KDF salt (_LEGACY_FIXED_SALT) is used to derive the drive encryption key for any drive lacking a per-drive salt file, defeating precomputation resistance and enabling an offline rainbow-table attack.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (1.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% 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: 0.001 · change: +0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-8jx3-27qf-3p97) (vendor-advisory, Vendor Advisory)
- VulnCheck Advisory: openssl_encrypt before 1.4.9 Integrity Bypass via Added Files (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-81717?
- CVE-2026-81717 is a low-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Improper Verification of Cryptographic Signature. CVSS score: 3.5/10. Published 2026-08-27.
- How severe is CVE-2026-81717?
- Low severity. CVSS v3 base score is 3.5 out of 10.