CVE-2026-47842

A flaw was found in Spring Security. Applications configured to use AesBytesEncryptor with a two-argument constructor or a null Initialization Vector IV generator in Cipher Block Chaining CBC mode will encrypt data using a predictable, all-zero IV. This deterministic encryption allows an attacker...

CVE-2026-47842

Applications using AesBytesEncryptor with the two-argument constructor or when passing a null IV generator and CBC as the encryption mode encrypt data with AES/CBC using a null all-zero initialization vector. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Sprin...

EUVD-2026-66677

Applications using AesBytesEncryptor with the two-argument constructor or when passing a null IV generator and CBC as the encryption mode encrypt data with AES/CBC using a null all-zero initialization vector. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Sprin...

CVE-2026-47842

Spring Security 's AesBytesEncryptor deterministically encrypts data with AES/CBC when the two-argument constructor is used or a null IV generator is passed with CBC mode, resulting in a null (all-zero) initialization vector . This causes identical plaintexts to always produce identical ciphertex...

CVE-2026-47842 Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation

Applications using AesBytesEncryptor with the two-argument constructor or when passing a null IV generator and CBC as the encryption mode encrypt data with AES/CBC using a null all-zero initialization vector. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Sprin...

cve-2026-47842 - MEDIUM - Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation

cve-2026-47842 - MEDIUM - Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation...

Generation of Predictable IV with CBC Mode

Overview org.springframework.security:spring-security-crypto is a spring-security-crypto library for Spring Security. Affected versions of this package are vulnerable to Generation of Predictable IV with CBC Mode via AesBytesEncryptor when using the two-argument constructor or specifying a null I...