CVE-2026-81703
openssl_encrypt before 1.4.9 Authentication Bypass via Unencrypted PQC Key
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that decrypt under any password, bypassing authentication and producing attacker-chosen plaintext with false integrity verification.
| CWE | CWE-287 |
| Vendor | jahlives |
| Product | openssl_encrypt |
| Published | Aug 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
jahlives / openssl_encrypt
0 < 1.4.9