DEBIAN-CVE-2026-8763

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Source
https://security-tracker.debian.org/tracker/CVE-2026-8763
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-8763
Upstream
Published
2026-08-03T01:16:45.807Z
Modified
2026-08-05T08:47:39.384617862Z
Severity
  • 9.3 (Critical) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber CVSS Calculator
Summary
[none]
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).

References

Affected packages

Debian:11 / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/debian/bouncycastle?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.68-2
1.68-3
1.68-4
1.68-5
1.69-1
1.71-1
1.72-1
1.72-2
1.77-1
1.80-1
1.80-2
1.80-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"

Debian:12 / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/debian/bouncycastle?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.72-2
1.77-1
1.80-1
1.80-2
1.80-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"

Debian:13 / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/debian/bouncycastle?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.80-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"

Debian:14 / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/debian/bouncycastle?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.80-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8763.json"