Generation of Predictable IV with CBC Mode Affecting org.springframework.security:spring-security-crypto package, versions [5.7.0, 7.0.7)[7.1.0, 7.1.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGSPRINGFRAMEWORKSECURITY-19267391
- published26 Aug 2026
- disclosed20 Aug 2026
- creditUnknown
Introduced: 20 Aug 2026
NewCVE-2026-47842 (opens in a new tab)How to fix?
Upgrade org.springframework.security:spring-security-crypto to version 7.0.7, 7.1.1 or higher.
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 IV generator with CBC mode. An attacker can correlate encrypted values, determine when two records share the same plaintext, and mount dictionary attacks by pre-encrypting candidate values and comparing the results if they have read access to the encrypted data store.