{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.85"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "57fbd3c501f7a369f64eda311d6a709fc0bcae84"
            }
          ],
          "repo": "https://github.com/bcgit/bc-java",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.73.0"
              },
              {
                "fixed": "2.73.12"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "468b5082f3f0971e80bf9edb7029c17b39b9ba0c"
            },
            {
              "fixed": "f101b232c5d3e07ecdd504210a57e43831d6cd65"
            }
          ],
          "repo": "https://github.com/bcgit/bc-lts-java",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "bcorg",
    "cwe_ids": [
      "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8763.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.0.0"
          },
          {
            "fixed": "1.0.2.7"
          },
          {
            "introduced": "2.0.0"
          },
          {
            "fixed": "2.0.2"
          },
          {
            "introduced": "2.1.0"
          },
          {
            "fixed": "2.1.3"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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).",
  "id": "CVE-2026-8763",
  "modified": "2026-08-04T11:31:01.796943149Z",
  "published": "2026-08-03T00:36:05.088Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bcgit/bc-java/wiki/CVE-2026-8763"
    },
    {
      "type": "WEB",
      "url": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/"
    },
    {
      "type": "WEB",
      "url": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/"
    },
    {
      "type": "WEB",
      "url": "https://www.bouncycastle.org/download/bouncy-castle-java/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8763.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%908763"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8763"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bcgit/bc-java/commit/2c28b253a44681fbbc562561eab6ad383d2ae558"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bcgit/bc-java"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bcgit/bc-lts-java"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Name Constraints bypass via trailing dot in rfc822Name and URI"
}