Skip to content
Heist/ feed
CriticalFix available

DEBIAN-CVE-2026-8763

Type: advisorySource: OSV1 source record

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).

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-8763

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-8763

bouncycastle

Source reference: /affected/0/package/name

Affected versions
1.72-2

Source reference: /affected/0/versions

1.77-1

Source reference: /affected/0/versions

1.80-1

Source reference: /affected/0/versions

1.80-2

Source reference: /affected/0/versions

1.80-3

Source reference: /affected/0/versions

1.86-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

bouncycastle

Source reference: /affected/1/package/name

Affected versions
1.80-3

Source reference: /affected/1/versions

1.86-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

bouncycastle

Source reference: /affected/2/package/name

Affected versions
1.80-3

Source reference: /affected/2/versions

Fixed versions
1.86-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "bouncycastle",
      "purl": "pkg:deb/debian/bouncycastle?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.72-2",
      "1.77-1",
      "1.80-1",
      "1.80-2",
      "1.80-3",
      "1.86-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "bouncycastle",
      "purl": "pkg:deb/debian/bouncycastle?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.80-3",
      "1.86-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.86-1"
          }
        ]
      }
    ],
    "package": {
      "name": "bouncycastle",
      "purl": "pkg:deb/debian/bouncycastle?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.80-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]
Related CVEs
CVE-2026-8763

Source reference: /upstream

Publisher severity

critical

Source reference: /severity/0/score

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-8763 · Critical

BC-JAVA, BC-LTS-JAVA, BC-FJA

Event
#72852 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement