Loading vulnerability…
CVE-2026-8763 is an improper certificate validation vulnerability in Bouncy Castle for Java affecting certificate Name Constraints enforcement. In vulnerable versions, handling of trailing dots in rfc822Name and URI values can allow a bypass of Name Constraints checks during PKIX certificate validation. The issue is associated with the PKIXNameConstraintValidator code path and affects Bouncy Castle for Java before 1.85, Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS before 1.0.2.7 in the 1.0.x series, 2.0.2 in the 2.0.x series, and 2.1.3 in the 2.1.x series. By exploiting differences in canonicalization or comparison of constrained names that include a trailing dot, an attacker can cause certificates containing otherwise restricted email or URI identities to be accepted when they should be rejected.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.