Vulnerability DatabaseCVE-2026-74876
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CVE-2026-74876
Published:August 17, 2026
Updated:September 01, 2026
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.
Affected Packages
openssl-encrypt (PYTHON):
Affected version(s) >=0.2.2 <1.4.0
Fix Suggestion:
Update to version 1.4.0
Related Resources (6)
https://nvd.nist.gov/vuln/detail/CVE-2026-74876
https://github.com/jahlives/openssl_encrypt/commit/f4a1ba660063cd9e17883829e5272a248525a16b
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-8h88-gxp3-j7pg
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74876.json
https://www.vulncheck.com/advisories/openssl-encrypt-before-unverified-key-bundle-encryption
https://github.com/jahlives/openssl_encrypt
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
CWE-347
EPSS
Base Score:
0.20