CVE-2026-47842
Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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 Spring Security 6.4.0 - 6.4.18 Spring Security 5.8.0 - 5.8.27 Spring Security 5.7.0 - 5.7.25
| Vendor | spring |
| Product | spring security |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Aug 26, 2026 |
| Last Updated | Aug 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Spring / Spring Security
7.1.0 7.0.0 ≤ 7.0.6 6.5.0 ≤ 6.5.11 6.4.0 ≤ 6.4.18 5.8.0 ≤ 5.8.27 5.7.0 ≤ 5.7.25