CVE-2026-74889 openssl_encrypt before 1.4.0 Weak Key Derivation via HKDF

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74889 openssl_encrypt before 1.4.0 Weak Key Derivation via HKDF

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74889

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74889 openssl_encrypt before 1.4.0 Weak Key Derivation via HKDF

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74889

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74889

The openssl_encrypt library (PHP package) before version 1.4.0 uses HKDF with no salt and a static info parameter in its key normalization functions, producing deterministic, low-entropy derived keys. Attackers with identical inputs can predict derived keys, weakening cryptographic security again...

EUVD-2026-60108

opensslencrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks...

CVE-2026-74888

opensslencrypt 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...

CVE-2026-74888 openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation

opensslencrypt 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...

EUVD-2026-60107

opensslencrypt 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...

CVE-2026-74888 openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation

opensslencrypt 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...

EUVD-2026-60095

opensslencrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.fromdict that creates key bundles from untrusted data without verifying signatures. Attackers can call fromdict followed by toidentity without signature verification to encrypt data using attacker-controlled public...

CVE-2026-74877 openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key

opensslencrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revokekey method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership...

CVE-2026-74877

opensslencrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revokekey method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership...

EUVD-2026-60096

opensslencrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revokekey method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership...

CVE-2026-74876 openssl_encrypt before 1.4.0 Unverified Key Bundle Encryption

opensslencrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.fromdict that creates key bundles from untrusted data without verifying signatures. Attackers can call fromdict followed by toidentity without signature verification to encrypt data using attacker-controlled public...

CVE-2026-74876 openssl_encrypt before 1.4.0 Unverified Key Bundle Encryption

opensslencrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.fromdict that creates key bundles from untrusted data without verifying signatures. Attackers can call fromdict followed by toidentity without signature verification to encrypt data using attacker-controlled public...

CVE-2026-74877

openssl_encrypt versions before 1.4.0 contain a missing ownership verification flaw in the revoke_key method (keyserver/service.py, lines 195–270). The method accepts a client_id parameter but never verifies it matches key.owner_client_id, allowing any authenticated client to revoke another clien...

CVE-2026-74871

opensslencrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password...

CVE-2026-74871 openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR

opensslencrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password...