{"cve":"CVE-2026-8763","nvd":{"published":"2026-08-03T01:16:45.807","modified":"2026-09-02T14:28:48.940","status":"Analyzed","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).","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber","score":9.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-295"],"references":["https://github.com/bcgit/bc-java/commit/2c28b253a44681fbbc562561eab6ad383d2ae558","https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%908763"],"products":["bouncycastle:bc-java","bouncycastle:bouncy_castle_for_java_lts","bouncycastle:fips_java_api"],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-8763","score":0.0043,"percentile":0.37268,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9pwp-9qqc-pr26","url":"https://osv.dev/vulnerability/GHSA-9pwp-9qqc-pr26","summary":"Bouncy Castle: Name Constraints bypass via trailing dot in rfc822Name and URI","modified":"2026-09-18T17:45:06.105254943Z","packages":[{"ecosystem":"Maven","name":"org.bouncycastle:bc-fips","purl":"pkg:maven/org.bouncycastle/bc-fips","ranges":["<1.0.2.7"],"fixed":["1.0.2.7"]},{"ecosystem":"Maven","name":"org.bouncycastle:bc-fips","purl":"pkg:maven/org.bouncycastle/bc-fips","ranges":[">=2.0.0 <2.0.2"],"fixed":["2.0.2"]},{"ecosystem":"Maven","name":"org.bouncycastle:bc-fips","purl":"pkg:maven/org.bouncycastle/bc-fips","ranges":[">=2.1.0 <2.1.3"],"fixed":["2.1.3"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk18on","purl":"pkg:maven/org.bouncycastle/bcprov-jdk18on","ranges":["<1.85"],"fixed":["1.85"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-lts8on","purl":"pkg:maven/org.bouncycastle/bcprov-lts8on","ranges":["<2.73.12"],"fixed":["2.73.12"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15to18","purl":"pkg:maven/org.bouncycastle/bcprov-jdk15to18","ranges":["<1.85"],"fixed":["1.85"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}