UBUNTU-CVE-2026-42498

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Source
https://ubuntu.com/security/CVE-2026-42498
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-42498
Upstream
  • CVE-2026-42498
Downstream
Related
Published
2026-05-12T16:16:00Z
Modified
2026-06-11T10:45:11.140299912Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.

References

Affected packages

Ubuntu:25.10
tomcat10

Package

Name
tomcat10
Purl
pkg:deb/ubuntu/tomcat10?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
10.1.40-1ubuntu1.25.10.1

Affected versions

10.*
10.1.35-1
10.1.40-1
10.1.40-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtomcat10-embed-java",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "libtomcat10-java",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10-admin",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10-common",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10-docs",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10-examples",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        },
        {
            "binary_name": "tomcat10-user",
            "binary_version": "10.1.40-1ubuntu1.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
tomcat11

Package

Name
tomcat11
Purl
pkg:deb/ubuntu/tomcat11?arch=source&distro=questing

Affected ranges

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

Affected versions

11.*
11.0.6-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat11-embed-java",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "libtomcat11-java",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11-admin",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11-common",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11-docs",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11-examples",
            "binary_version": "11.0.6-1"
        },
        {
            "binary_name": "tomcat11-user",
            "binary_version": "11.0.6-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.95-1ubuntu1.1

Affected versions

9.*
9.0.70-2ubuntu1.1
9.0.70-2ubuntu2
9.0.70-2ubuntu3
9.0.95-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.95-1ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
Ubuntu:26.04:LTS
tomcat10

Package

Name
tomcat10
Purl
pkg:deb/ubuntu/tomcat10?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
10.1.40-1ubuntu1.26.04.1

Affected versions

10.*
10.1.40-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtomcat10-embed-java",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "libtomcat10-java",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10-admin",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10-common",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10-docs",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10-examples",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        },
        {
            "binary_name": "tomcat10-user",
            "binary_version": "10.1.40-1ubuntu1.26.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
tomcat11

Package

Name
tomcat11
Purl
pkg:deb/ubuntu/tomcat11?arch=source&distro=resolute

Affected ranges

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

Affected versions

11.*
11.0.6-1
11.0.11-1
11.0.15-1
11.0.18-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libtomcat11-embed-java",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "libtomcat11-java",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11-admin",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11-common",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11-docs",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11-examples",
            "binary_version": "11.0.18-1"
        },
        {
            "binary_name": "tomcat11-user",
            "binary_version": "11.0.18-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.115-1ubuntu0.1

Affected versions

9.*
9.0.95-1ubuntu1
9.0.111-1
9.0.115-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.115-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
Ubuntu:Pro:18.04:LTS
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.16-3ubuntu0.18.04.2+esm8

Affected versions

9.*
9.0.16-3~18.04.1
9.0.16-3ubuntu0.18.04.1
9.0.16-3ubuntu0.18.04.2
9.0.16-3ubuntu0.18.04.2+esm1
9.0.16-3ubuntu0.18.04.2+esm2
9.0.16-3ubuntu0.18.04.2+esm3
9.0.16-3ubuntu0.18.04.2+esm4
9.0.16-3ubuntu0.18.04.2+esm5
9.0.16-3ubuntu0.18.04.2+esm6
9.0.16-3ubuntu0.18.04.2+esm7

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
Ubuntu:Pro:20.04:LTS
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.31-1ubuntu0.9+esm3

Affected versions

9.*
9.0.24-1
9.0.27-1
9.0.31-1
9.0.31-1ubuntu0.1
9.0.31-1ubuntu0.2
9.0.31-1ubuntu0.3
9.0.31-1ubuntu0.4
9.0.31-1ubuntu0.5
9.0.31-1ubuntu0.6
9.0.31-1ubuntu0.7
9.0.31-1ubuntu0.8
9.0.31-1ubuntu0.9
9.0.31-1ubuntu0.9+esm1
9.0.31-1ubuntu0.9+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.31-1ubuntu0.9+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
Ubuntu:Pro:22.04:LTS
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.58-1ubuntu0.2+esm4

Affected versions

9.*
9.0.43-3
9.0.54-1
9.0.55-1
9.0.58-1
9.0.58-1ubuntu0.1
9.0.58-1ubuntu0.1+esm1
9.0.58-1ubuntu0.1+esm2
9.0.58-1ubuntu0.1+esm3
9.0.58-1ubuntu0.1+esm4
9.0.58-1ubuntu0.2
9.0.58-1ubuntu0.2+esm1
9.0.58-1ubuntu0.2+esm2
9.0.58-1ubuntu0.2+esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.58-1ubuntu0.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
Ubuntu:Pro:24.04:LTS
tomcat10

Package

Name
tomcat10
Purl
pkg:deb/ubuntu/tomcat10?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
10.1.16-1ubuntu0.1~esm4

Affected versions

10.*
10.1.10-1
10.1.14-1
10.1.15-1
10.1.16-1
10.1.16-1ubuntu0.1~esm1
10.1.16-1ubuntu0.1~esm2
10.1.16-1ubuntu0.1~esm3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libtomcat10-embed-java",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "libtomcat10-java",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10-admin",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10-common",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10-docs",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10-examples",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        },
        {
            "binary_name": "tomcat10-user",
            "binary_version": "10.1.16-1ubuntu0.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"
tomcat9

Package

Name
tomcat9
Purl
pkg:deb/ubuntu/tomcat9?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.70-2ubuntu0.1+esm3

Affected versions

9.*
9.0.70-1ubuntu1
9.0.70-2
9.0.70-2ubuntu0.1
9.0.70-2ubuntu0.1+esm1
9.0.70-2ubuntu0.1+esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.70-2ubuntu0.1+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42498.json"