2524636 – (CVE-2026-47842) CVE-2026-47842 org.springframework.security/spring-security-core: Spring Security: Information disclosure via deterministic AES/CBC encryption

Bug 2524636 (CVE-2026-47842) - CVE-2026-47842 org.springframework.security/spring-security-core: Spring Security: Information disclosure via deterministic AES/CBC encryption

Summary: CVE-2026-47842 org.springframework.security/spring-security-core: Spring Secu...

Keywords:
Status:	NEW
Alias:	CVE-2026-47842
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2026-08-26 19:31 UTC by OSIDB Bzimport
Modified:	2026-08-31 10:23 UTC (History)
CC List:	15 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2026-08-26 19:31:54 UTC

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

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