CVE-2026-81703
openssl_encrypt before 1.4.9 Authentication Bypass via Unencrypted PQC Key
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 27, 2026
- Updated
- Oct 1, 2026
- Reserved
- Aug 27, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
openssl_encryptjahlives |
|
References
- GitHub Security Advisory (GHSA-qqfq-g2cv-j7v3)vendor-advisory
- VulnCheck Advisory: openssl_encrypt before 1.4.9 Authentication Bypass via Unencrypted PQC Keythird-party-advisory
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