CVE-2026-81689
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jahlives | openssl_encrypt | 0 < 1.4.9 | affected |
| jahlives | openssl_encrypt | 1.4.9 | unaffected |
Weaknesses
- CWE-916: Use of Password Hash With Insufficient Computational Effort
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-3v63-778v-3mvp
- https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-weak-pepper-key-derivation
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