USN-8435-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-8435-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8435-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8435-1
Upstream
Related
Published
2026-06-16T14:27:13Z
Modified
2026-07-24T15:35:15.320664864Z
Summary
squid vulnerabilities
Details

It was discovered that Squid incorrectly handled FTP gateway processing under certain circumstances, which could result in an out-of-bounds read. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2026-47729)

It was discovered that Squid incorrectly handled cache digest processing under certain circumstances, which could result in a heap-based buffer overflow. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-50012)

References

Affected packages

Ubuntu:22.04:LTS / squid

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.9-0ubuntu0.22.04.7

Affected versions

4.*
4.13-10ubuntu5
5.*
5.2-1ubuntu1
5.2-1ubuntu3
5.2-1ubuntu4
5.2-1ubuntu4.1
5.2-1ubuntu4.2
5.2-1ubuntu4.3
5.7-0ubuntu0.22.04.1
5.7-0ubuntu0.22.04.2
5.7-0ubuntu0.22.04.3
5.7-0ubuntu0.22.04.4
5.9-0ubuntu0.22.04.1
5.9-0ubuntu0.22.04.2
5.9-0ubuntu0.22.04.3
5.9-0ubuntu0.22.04.4
5.9-0ubuntu0.22.04.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        },
        {
            "binary_name": "squid-openssl",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "5.9-0ubuntu0.22.04.7"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-47729"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-50012"
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8435-1.json"

Ubuntu:24.04:LTS / squid

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.14-0ubuntu0.24.04.4

Affected versions

6.*
6.1-2ubuntu1
6.1-2ubuntu2
6.5-1ubuntu1
6.5-1ubuntu2
6.5-1ubuntu3
6.6-1ubuntu4
6.6-1ubuntu5
6.6-1ubuntu5.1
6.10-0ubuntu0.24.04.1
6.13-0ubuntu0.24.04.1
6.13-0ubuntu0.24.04.2
6.13-0ubuntu0.24.04.3
6.14-0ubuntu0.24.04.1
6.14-0ubuntu0.24.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        },
        {
            "binary_name": "squid-openssl",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "6.14-0ubuntu0.24.04.4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-47729"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-50012"
        }
    ],
    "ecosystem": "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8435-1.json"

Ubuntu:25.10 / squid

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.14-0ubuntu0.25.10.4

Affected versions

6.*
6.13-1ubuntu1
6.13-1ubuntu2
6.13-1ubuntu3
6.13-1ubuntu4
6.13-1ubuntu4.1
6.14-0ubuntu0.25.10.1
6.14-0ubuntu0.25.10.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        },
        {
            "binary_name": "squid-cgi",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        },
        {
            "binary_name": "squid-openssl",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        },
        {
            "binary_name": "squid-purge",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        },
        {
            "binary_name": "squidclient",
            "binary_version": "6.14-0ubuntu0.25.10.4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-47729"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-50012"
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8435-1.json"

Ubuntu:26.04:LTS / squid

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.2-2ubuntu2.2

Affected versions

6.*
6.13-1ubuntu4
6.13-1ubuntu5
7.*
7.2-2ubuntu1
7.2-2ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "squid",
            "binary_version": "7.2-2ubuntu2.2"
        },
        {
            "binary_name": "squid-common",
            "binary_version": "7.2-2ubuntu2.2"
        },
        {
            "binary_name": "squid-openssl",
            "binary_version": "7.2-2ubuntu2.2"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-47729"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-50012"
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8435-1.json"