Critical severity9.1OSV Advisory· Published Aug 3, 2026· Updated Sep 2, 2026
CVE-2026-8763
CVE-2026-8763
Description
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- Range: r2rv73dot11, r2rv73dot10, r2rv73dot9, …
- osv-coords3 versionspkg:rpm/opensuse/bouncycastle&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/bouncycastle&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/bouncycastle-fips
< 1.85-160000.1.1+ 2 more
- (no CPE)range: < 1.85-160000.1.1
- (no CPE)range: < 1.85-1.1
- (no CPE)range: < 2.1.3-r0
- Range: <1.85, <2.73.12, <1.0.2.7, <2.0.2, <2.1.3
- Range: <1.85
- Range: <2.73.12
Patches
Vulnerability mechanics
References
4News mentions
2- Bouncy Castle for Java: 25 Vulnerabilities Disclosed Together on August 3, 2026Vypr Intelligence · Aug 3, 2026
- Bouncy Castle for Java: 25 Vulnerabilities Disclosed in Single Batch on August 3, 2026Vypr Intelligence · Aug 3, 2026