CVE-2026-74876
openssl_encrypt before 1.4.0 Unverified Key Bundle Encryption
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 17, 2026
- Updated
- Oct 8, 2026
- Reserved
- Aug 17, 2026
Description
openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-347 Improper Verification of Cryptographic Signature
Affected Products
| Product | Versions |
|---|---|
openssl_encryptjahlives |
|
References
- GitHub Security Advisory (GHSA-8h88-gxp3-j7pg)vendor-advisory
- VulnCheck Advisory: openssl_encrypt before 1.4.0 Unverified Key Bundle Encryptionthird-party-advisory
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