Bouncycastle: In Bouncy Castle for Java before 1.85, LDAP filter injection in legacy jdk1.4 LDAPStoreHelper. (CVE-2026-59652)
Description
Bouncy Castle for Java versions before 1.85 contain an LDAP filter injection vulnerability in the legacy jdk1.4 LDAPStoreHelper component. This vulnerability allows an attacker to inject malicious LDAP filter content, potentially leading to limited confidentiality and integrity impacts. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. No official patch or remediation details are provided in the available data. The affected versions include specific Ubuntu package versions of Bouncy Castle Java library prior to 1.85.
CVSS v3.1
Score 6.5medium
Affected software
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/bouncycastle?arch=source&distro=stonkingpkg:deb/ubuntu/bouncycastle?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59652 describes an LDAP filter injection vulnerability in Bouncy Castle for Java before version 1.85, specifically in the legacy jdk1.4 LDAPStoreHelper. This flaw allows injection of crafted LDAP filter content, which can lead to limited confidentiality and integrity compromise. The vulnerability is rated medium severity with a CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). The affected versions are various Ubuntu package versions of Bouncy Castle Java library prior to 1.85. No vendor advisory or patch information is provided, so patch status is not confirmed.
Potential Impact
The vulnerability allows LDAP filter injection which can result in limited confidentiality and integrity impacts. There is no indication of availability impact. The attack vector is network-based, requiring no privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding use of the legacy jdk1.4 LDAPStoreHelper or upgrading to Bouncy Castle Java version 1.85 or later once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-59652
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f5d82cdf04f656663248
Added to database: 10/17/2026, 22:25:28 UTC
Last enriched: 10/18/2026, 00:29:56 UTC
Last updated: 10/18/2026, 00:29:56 UTC
Views: 2
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