UBUNTU-CVE-2026-5260

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Source
https://ubuntu.com/security/CVE-2026-5260
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-5260
Upstream
  • CVE-2026-5260
Downstream
Related
Published
2026-04-30T00:00:00Z
Modified
2026-07-06T20:44:27.171088565Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.

References

Affected packages

Ubuntu:22.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.3-4ubuntu1.9

Affected versions

3.*
3.7.1-5ubuntu1
3.7.2-2ubuntu1
3.7.2-4ubuntu1
3.7.2-5ubuntu1
3.7.3-4ubuntu1
3.7.3-4ubuntu1.1
3.7.3-4ubuntu1.2
3.7.3-4ubuntu1.3
3.7.3-4ubuntu1.4
3.7.3-4ubuntu1.5
3.7.3-4ubuntu1.6
3.7.3-4ubuntu1.7
3.7.3-4ubuntu1.8

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9",
            "binary_name": "libgnutlsxx28"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:24.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.3-1.1ubuntu3.6

Affected versions

3.*
3.8.1-4ubuntu1
3.8.1-4ubuntu6
3.8.1-4ubuntu7
3.8.3-1ubuntu1
3.8.3-1.1ubuntu2
3.8.3-1.1ubuntu3
3.8.3-1.1ubuntu3.1
3.8.3-1.1ubuntu3.2
3.8.3-1.1ubuntu3.3
3.8.3-1.1ubuntu3.4
3.8.3-1.1ubuntu3.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.8.3-1.1ubuntu3.6",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6",
            "binary_name": "libgnutls-dane0t64"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6",
            "binary_name": "libgnutls-openssl27t64"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6",
            "binary_name": "libgnutls30t64"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:25.10
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.9-3ubuntu2.2

Affected versions

3.*
3.8.9-2ubuntu3
3.8.9-3ubuntu1
3.8.9-3ubuntu2
3.8.9-3ubuntu2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.8.9-3ubuntu2.2",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.8.9-3ubuntu2.2",
            "binary_name": "libgnutls-dane0t64"
        },
        {
            "binary_version": "3.8.9-3ubuntu2.2",
            "binary_name": "libgnutls-openssl27t64"
        },
        {
            "binary_version": "3.8.9-3ubuntu2.2",
            "binary_name": "libgnutls30t64"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:26.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.12-2ubuntu1.1

Affected versions

3.*
3.8.9-3ubuntu2
3.8.10-3ubuntu1
3.8.12-2ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.8.12-2ubuntu1.1",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.8.12-2ubuntu1.1",
            "binary_name": "libgnutls-dane0t64"
        },
        {
            "binary_version": "3.8.12-2ubuntu1.1",
            "binary_name": "libgnutls-openssl27t64"
        },
        {
            "binary_version": "3.8.12-2ubuntu1.1",
            "binary_name": "libgnutls30t64"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:Pro:18.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.18-1ubuntu1.6+esm3

Affected versions

3.*
3.5.8-6ubuntu3
3.5.17-1ubuntu1
3.5.17-1ubuntu3
3.5.18-1ubuntu1
3.5.18-1ubuntu1.1
3.5.18-1ubuntu1.2
3.5.18-1ubuntu1.3
3.5.18-1ubuntu1.4
3.5.18-1ubuntu1.5
3.5.18-1ubuntu1.6
3.5.18-1ubuntu1.6+esm1
3.5.18-1ubuntu1.6+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.5.18-1ubuntu1.6+esm3",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.6+esm3",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.6+esm3",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.6+esm3",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.6+esm3",
            "binary_name": "libgnutlsxx28"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:Pro:20.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.13-2ubuntu1.12+esm2

Affected versions

3.*
3.6.9-5ubuntu1
3.6.9-5ubuntu2
3.6.10-5
3.6.11.1-2
3.6.11.1-2ubuntu2
3.6.13-2ubuntu1
3.6.13-2ubuntu1.1
3.6.13-2ubuntu1.2
3.6.13-2ubuntu1.3
3.6.13-2ubuntu1.6
3.6.13-2ubuntu1.7
3.6.13-2ubuntu1.8
3.6.13-2ubuntu1.9
3.6.13-2ubuntu1.10
3.6.13-2ubuntu1.11
3.6.13-2ubuntu1.12
3.6.13-2ubuntu1.12+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.12+esm2",
            "binary_name": "libgnutlsxx28"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:Pro:FIPS-preview:22.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=fips-preview%2Fjammy

Affected ranges

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

Affected versions

3.*
3.7.3-4ubuntu1.2+Fips1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1",
            "binary_name": "libgnutlsxx28"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:Pro:FIPS-updates:22.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=fips-updates%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.3-4ubuntu1.9+Fips1

Affected versions

3.*
3.7.3-4ubuntu1.2+Fips1.1
3.7.3-4ubuntu1.3+Fips1.1
3.7.3-4ubuntu1.4+Fips1
3.7.3-4ubuntu1.5+Fips1
3.7.3-4ubuntu1.6+Fips1
3.7.3-4ubuntu1.7+Fips1
3.7.3-4ubuntu1.7+Fips1.1
3.7.3-4ubuntu1.8+Fips1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.7.3-4ubuntu1.9+Fips1",
            "binary_name": "libgnutlsxx28"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"
Ubuntu:Pro:FIPS-updates:24.04:LTS
gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=source&distro=fips-updates%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.3-1.1ubuntu3.6+Fips1.2

Affected versions

3.*
3.8.3-1.1ubuntu3.1+Fips1
3.8.3-1.1ubuntu3.4+Fips1
3.8.3-1.1ubuntu3.4+Fips1.1
3.8.3-1.1ubuntu3.5+Fips1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.8.3-1.1ubuntu3.6+Fips1.2",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6+Fips1.2",
            "binary_name": "libgnutls-dane0t64"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6+Fips1.2",
            "binary_name": "libgnutls-openssl27t64"
        },
        {
            "binary_version": "3.8.3-1.1ubuntu3.6+Fips1.2",
            "binary_name": "libgnutls30t64"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5260.json"