UBUNTU-CVE-2026-15055

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Source
https://ubuntu.com/security/CVE-2026-15055
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-15055
Upstream
Published
2026-08-04T00:00:00Z
Modified
2026-08-05T01:45:25.283583014Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).

References

Affected packages

Ubuntu:26.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.80-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcjmail-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcprov-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbctls-java"
        },
        {
            "binary_version": "1.80-3",
            "binary_name": "libbcutil-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"
Ubuntu:Pro:16.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.49+dfsg-3ubuntu1
1.51-4ubuntu1
1.51-4ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.51-4ubuntu1+esm1",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.51-4ubuntu1+esm1",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.51-4ubuntu1+esm1",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.51-4ubuntu1+esm1",
            "binary_name": "libbcprov-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"
Ubuntu:Pro:18.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.57-1
1.58-1
1.59-1
1.59-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.59-1ubuntu0.1~esm1",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.59-1ubuntu0.1~esm1",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.59-1ubuntu0.1~esm1",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.59-1ubuntu0.1~esm1",
            "binary_name": "libbcprov-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"
Ubuntu:Pro:20.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1.*
1.61-1
1.61-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.61-1ubuntu0.1~esm1",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.61-1ubuntu0.1~esm1",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.61-1ubuntu0.1~esm1",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.61-1ubuntu0.1~esm1",
            "binary_name": "libbcprov-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"
Ubuntu:Pro:22.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

1.*
1.68-2
1.68-4
1.68-5
1.68-5ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.68-5ubuntu0.1~esm1",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.68-5ubuntu0.1~esm1",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.68-5ubuntu0.1~esm1",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.68-5ubuntu0.1~esm1",
            "binary_name": "libbcprov-java"
        },
        {
            "binary_version": "1.68-5ubuntu0.1~esm1",
            "binary_name": "libbctls-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"
Ubuntu:Pro:24.04:LTS
bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

1.*
1.72-2
1.77-1
1.77-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcjmail-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcmail-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcpg-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcpkix-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcprov-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbctls-java"
        },
        {
            "binary_version": "1.77-1ubuntu0.1~esm1",
            "binary_name": "libbcutil-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-15055.json"