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High severity7.5OSV Advisory· Published Aug 3, 2026· Updated Aug 28, 2026

CVE-2026-12852

CVE-2026-12852

Description

In Bouncy Castle for Java before 1.85, MLS wire decoder allocates attacker-declared opaque length before bounds check.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4

Legion Of The Bouncy Castle Inc./Bc JavaOSV2 versions
r1rv84, r1rv81, r1rv83, …+ 1 more
- (no CPE)range: r1rv84, r1rv81, r1rv83, …
- (no CPE)range: <1.85
osv-coords2 versions
pkg:rpm/opensuse/bouncycastle&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/bouncycastle&distro=openSUSE%20Tumbleweed
< 1.85-160000.1.1+ 1 more
- (no CPE)range: < 1.85-160000.1.1
- (no CPE)range: < 1.85-1.1

Patches

Vulnerability mechanics

References

1

github.com/bcgit/bc-java/commit/a747038bb5bbd5e29fb2b7607ab38af1fd8d1790nvdPatch

News mentions

1

Bouncy Castle for Java: 25 Vulnerabilities Disclosed in Single Batch on August 3, 2026
Vypr Intelligence · Aug 3, 2026