Improper Certificate Validation Affecting bouncycastle-pkix package, versions <0:1.70-4.amzn2023.0.8


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-BOUNCYCASTLEPKIX-19821449
  • published15 Sept 2026
  • disclosed3 Aug 2026

Introduced: 3 Aug 2026

CVE-2026-8763  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 bouncycastle-pkix to version 0:1.70-4.amzn2023.0.8 or higher.
This issue was patched in ALAS2023-2026-2153.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bouncycastle-pkix package and not the bouncycastle-pkix package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Base Scores

version 3.1