LDAP Filter Injection Vulnerability in Bouncy Castle for Java
CVE-2026-59652

6.9MEDIUM

Key Information:

Vendor

Legion Of The Bouncy Castle Inc.

Status
Bc-java
Vendor
CVE Published:
3 August 2026

What is CVE-2026-59652?

An LDAP filter injection vulnerability exists in the Bouncy Castle library for Java, specifically in the legacy LDAPStoreHelper associated with jdk1.4. This flaw allows attackers to manipulate LDAP queries, potentially leading to unauthorized access to sensitive data. Developers using versions prior to 1.85 are encouraged to upgrade to the latest release to mitigate the risks associated with this vulnerability.

Affected Version(s)

BC-JAVA all 0 < 1.85

References

https://github.com/bcgit/bc-java/wiki/CVE-2026-59652
vendor-advisory
https://github.com/bcgit/bc-java/commit/27c468af54ee6c6af...
patch

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alex Gaynor in collaboration with Claude and Anthropic Research
.