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  5. CVE-2026-0636

CVE-2026-0636: Bouncy Castle has an LDAP injection

April 17, 2026 (updated November 4, 2026)

Improper neutralization of special elements used in an LDAP query (‘LDAP injection’) vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcprov on all (prov modules). This vulnerability is associated with program files LDAPStoreHelper.

Issue affecting: BC 1.74 to 1.80.1, BC 1.81, BC 1.82 to BC 1.83.

Fixed versions: BC 1.80.2, BC 1.81.1, BC 1.84

References

  • access.redhat.com/errata/RHSA-2026:11720
  • access.redhat.com/errata/RHSA-2026:11721
  • access.redhat.com/errata/RHSA-2026:13631
  • access.redhat.com/errata/RHSA-2026:14272
  • access.redhat.com/errata/RHSA-2026:14276
  • access.redhat.com/errata/RHSA-2026:17668
  • access.redhat.com/errata/RHSA-2026:18054
  • access.redhat.com/errata/RHSA-2026:18055
  • access.redhat.com/errata/RHSA-2026:18059
  • access.redhat.com/errata/RHSA-2026:21772
  • access.redhat.com/errata/RHSA-2026:53644
  • access.redhat.com/errata/RHSA-2026:53645
  • access.redhat.com/errata/RHSA-2026:53646
  • access.redhat.com/errata/RHSA-2026:53806
  • access.redhat.com/errata/RHSA-2026:60239
  • access.redhat.com/errata/RHSA-2026:60246
  • access.redhat.com/errata/RHSA-2026:60247
  • access.redhat.com/errata/RHSA-2026:60248
  • access.redhat.com/errata/RHSA-2026:60249
  • access.redhat.com/errata/RHSA-2026:60250
  • access.redhat.com/errata/RHSA-2026:60251
  • access.redhat.com/errata/RHSA-2026:60252
  • access.redhat.com/errata/RHSA-2026:60254
  • access.redhat.com/errata/RHSA-2026:60256
  • access.redhat.com/errata/RHSA-2026:60259
  • access.redhat.com/errata/RHSA-2026:66488
  • access.redhat.com/security/cve/CVE-2026-0636
  • bugzilla.redhat.com/show_bug.cgi?id=2458641
  • github.com/advisories/GHSA-c3fc-8qff-9hwx
  • github.com/bcgit/bc-java/commit/d20cdb8430e09224114fec0179a71859929fcbde
  • github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%900636
  • nvd.nist.gov/vuln/detail/CVE-2026-0636
  • security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0636.json

Code Behaviors & Features

Detect and mitigate CVE-2026-0636 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions starting from 1.74.0 before 1.80.2, all versions starting from 1.81.0 before 1.81.1, all versions starting from 1.82.0 before 1.84.0

Fixed versions

  • 1.80.2
  • 1.81.1
  • 1.84.0

Solution

Upgrade to versions 1.80.2, 1.81.1, 1.84.0 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

Source file

maven/org.bouncycastle/bcprov-jdk18on/CVE-2026-0636.yml

Spotted a mistake? Edit the file on GitLab.

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