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CVE-2026-8763

CVE-2026-8763 · Name Constraints bypass via trailing dot in rfc822Name and URI

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

CVSS 9.3 · Critical · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bc-java

    Versions
    • ≥ 0, < 1.85: Affected (maven)

    Update to 1.85

  • bc-lts-java

    Versions
    • ≥ 2.73.0, < 2.73.12: Affected (maven)

    Update to 2.73.12

  • bc-fja

    Versions
    • ≥ 1.0.0, < 1.0.2.7: Affected (maven)
    • ≥ 2.0.0, < 2.0.2: Affected (maven)
    • ≥ 2.1.0, < 2.1.3: Affected (maven)

    Update to 1.0.2.7; Update to 2.0.2; Update to 2.1.3

  • bouncycastle Debian:12

    Versions
    • 1.72-2
    • 1.77-1
    • 1.80-1
    • 1.80-2
    • 1.80-3
    • 1.86-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Debian:13

    Versions
    • 1.80-3
    • 1.86-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Debian:14

    Versions
    • 1.80-3
    Affected ranges
    • ECOSYSTEM: < 1.86-1

    Update to 1.86-1

  • bouncycastle Ubuntu:Pro:16.04:LTS

    Versions
    • 1.49+dfsg-3ubuntu1
    • 1.51-4ubuntu1
    • 1.51-4ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:Pro:18.04:LTS

    Versions
    • 1.57-1
    • 1.58-1
    • 1.59-1
    • 1.59-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:Pro:20.04:LTS

    Versions
    • 1.61-1
    • 1.61-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:Pro:22.04:LTS

    Versions
    • 1.68-2
    • 1.68-4
    • 1.68-5
    • 1.68-5ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:Pro:24.04:LTS

    Versions
    • 1.72-2
    • 1.77-1
    • 1.77-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:26.10

    Versions
    • 1.80-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • bouncycastle Ubuntu:26.04:LTS

    Versions
    • 1.80-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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