UBUNTU-CVE-2026-54291

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Source
https://ubuntu.com/security/CVE-2026-54291
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54291
Upstream
Published
2026-07-06T19:17:00Z
Modified
2026-07-11T00:15:05.859894873Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N CVSS Calculator
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection can trigger the downgrade with a certificate whose signature algorithm has no tls-server-end-point channel-binding hash, because the bundled com.ongres.scram:scram-client returns an empty byte array instead of failing and pgJDBC ScramAuthenticator checks only that the server advertised a PLUS mechanism, without rejecting the empty binding or checking that the negotiated mechanism uses channel binding. This issue is fixed in version 42.7.12.

References

Affected packages

Ubuntu:14.04:LTS
libpgjava

Package

Name
libpgjava
Purl
pkg:deb/ubuntu/libpgjava?arch=source&distro=trusty

Affected ranges

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

Affected versions

9.*
9.2-1002-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpg-java",
            "binary_version": "9.2-1002-1"
        },
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "9.2-1002-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:16.04:LTS
libpgjava

Package

Name
libpgjava
Purl
pkg:deb/ubuntu/libpgjava?arch=source&distro=xenial

Affected ranges

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

Affected versions

9.*
9.2-1002-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpg-java",
            "binary_version": "9.2-1002-1"
        },
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "9.2-1002-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:22.04:LTS
libpgjava

Package

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

Affected ranges

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

Affected versions

42.*
42.2.23-1
42.2.24-1
42.3.1-1
42.3.2-1
42.3.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "42.3.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:24.04:LTS
libpgjava

Package

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

Affected ranges

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

Affected versions

42.*
42.5.4-1
42.6.0-2
42.7.0-1
42.7.1-1
42.7.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "42.7.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:25.10
libpgjava

Package

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

Affected ranges

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

Affected versions

42.*
42.7.5-1
42.7.5-2
42.7.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "42.7.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:26.04:LTS
libpgjava

Package

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

Affected ranges

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

Affected versions

42.*
42.7.7-1
42.7.8-1
42.7.8-2
42.7.9-1
42.7.10-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "42.7.10-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:Pro:18.04:LTS
libpgjava

Package

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

Affected ranges

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

Affected versions

9.*
9.4.1212-1
9.4.1212-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "9.4.1212-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"
Ubuntu:Pro:20.04:LTS
libpgjava

Package

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

Affected ranges

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

Affected versions

42.*
42.2.6-1
42.2.8-1
42.2.9-1
42.2.10-1
42.2.10-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libpostgresql-jdbc-java",
            "binary_version": "42.2.10-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54291.json"