CVE-2026-74888
openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose security properties have not been formally analyzed. Attackers can exploit this weakened key derivation to more efficiently crack passwords protecting legacy encrypted files compared to standard PBKDF2 implementations.
| CWE | CWE-327 |
| Vendor | jahlives |
| Product | openssl_encrypt |
| Published | Aug 17, 2026 |
| Last Updated | Aug 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
jahlives / openssl_encrypt
0 < 1.4.0