UBUNTU-CVE-2026-7259

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Source
https://ubuntu.com/security/CVE-2026-7259
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7259.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-7259
Upstream
  • CVE-2026-7259
Downstream
Related
Published
2026-05-10T05:16:00Z
Modified
2026-05-28T15:45:22.487859107Z
Severity
  • 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/U:Amber CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a mismatch between encoding lists in Oniguruma and mbfl leads to  a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when user-controlled input can influence the encoding passed to mbregexencoding().

References

Affected packages

Ubuntu:22.04:LTS / php8.1

Package

Name
php8.1
Purl
pkg:deb/ubuntu/php8.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.1.2-1ubuntu2.24

Affected versions

8.*
8.1.0~rc4-1ubuntu2
8.1.0-1
8.1.2-1ubuntu1
8.1.2-1ubuntu2
8.1.2-1ubuntu2.1
8.1.2-1ubuntu2.2
8.1.2-1ubuntu2.3
8.1.2-1ubuntu2.4
8.1.2-1ubuntu2.5
8.1.2-1ubuntu2.6
8.1.2-1ubuntu2.8
8.1.2-1ubuntu2.9
8.1.2-1ubuntu2.10
8.1.2-1ubuntu2.11
8.1.2-1ubuntu2.13
8.1.2-1ubuntu2.14
8.1.2-1ubuntu2.15
8.1.2-1ubuntu2.17
8.1.2-1ubuntu2.18
8.1.2-1ubuntu2.19
8.1.2-1ubuntu2.20
8.1.2-1ubuntu2.21
8.1.2-1ubuntu2.22
8.1.2-1ubuntu2.23

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "libapache2-mod-php7.4"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "libapache2-mod-php8.0"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "libapache2-mod-php8.1"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "libphp8.1-embed"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-bcmath"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-bz2"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-cgi"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-cli"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-common"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-curl"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-dba"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-enchant"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-fpm"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-gd"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-gmp"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-imap"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-interbase"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-intl"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-ldap"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-mbstring"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-mysql"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-odbc"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-opcache"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-pgsql"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-phpdbg"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-pspell"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-readline"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-snmp"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-soap"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-sqlite3"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-sybase"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-tidy"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-xml"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-xsl"
        },
        {
            "binary_version": "8.1.2-1ubuntu2.24",
            "binary_name": "php8.1-zip"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7259.json"

Ubuntu:24.04:LTS / php8.3

Package

Name
php8.3
Purl
pkg:deb/ubuntu/php8.3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.3.6-0ubuntu0.24.04.9

Affected versions

8.*
8.3.0-1
8.3.0-1ubuntu1
8.3.4-1
8.3.4-1build1
8.3.6-0maysync1
8.3.6-0ubuntu0.24.04.1
8.3.6-0ubuntu0.24.04.2
8.3.6-0ubuntu0.24.04.3
8.3.6-0ubuntu0.24.04.4
8.3.6-0ubuntu0.24.04.5
8.3.6-0ubuntu0.24.04.6
8.3.6-0ubuntu0.24.04.7
8.3.6-0ubuntu0.24.04.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "libapache2-mod-php8.3"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "libphp8.3-embed"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-bcmath"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-bz2"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-cgi"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-cli"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-common"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-curl"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-dba"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-enchant"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-fpm"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-gd"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-gmp"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-imap"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-interbase"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-intl"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-ldap"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-mbstring"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-mysql"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-odbc"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-opcache"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-pgsql"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-phpdbg"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-pspell"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-readline"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-snmp"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-soap"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-sqlite3"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-sybase"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-tidy"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-xml"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-xsl"
        },
        {
            "binary_version": "8.3.6-0ubuntu0.24.04.9",
            "binary_name": "php8.3-zip"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7259.json"

Ubuntu:25.10 / php8.4

Package

Name
php8.4
Purl
pkg:deb/ubuntu/php8.4?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.11-1ubuntu1.2

Affected versions

8.*
8.4.5-1ubuntu1
8.4.8-1ubuntu1
8.4.11-1ubuntu1
8.4.11-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "libapache2-mod-php8.4"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "libphp8.4-embed"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-bcmath"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-bz2"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-cgi"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-cli"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-common"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-curl"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-dba"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-enchant"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-fpm"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-gd"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-gmp"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-interbase"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-intl"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-ldap"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-mbstring"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-mysql"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-odbc"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-opcache"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-pgsql"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-phpdbg"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-readline"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-snmp"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-soap"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-sqlite3"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-sybase"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-tidy"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-xml"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-xsl"
        },
        {
            "binary_version": "8.4.11-1ubuntu1.2",
            "binary_name": "php8.4-zip"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7259.json"

Ubuntu:26.04:LTS / php8.5

Package

Name
php8.5
Purl
pkg:deb/ubuntu/php8.5?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.5.4-0ubuntu1.1

Affected versions

8.*
8.5.2-0ubuntu1
8.5.4-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "libapache2-mod-php8.5"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "libphp8.5-embed"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-bcmath"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-bz2"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-cgi"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-cli"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-common"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-curl"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-dba"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-enchant"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-fpm"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-gd"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-gmp"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-interbase"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-intl"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-ldap"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-litespeed"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-mbstring"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-mysql"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-odbc"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-pgsql"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-phpdbg"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-readline"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-snmp"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-soap"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-sqlite3"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-sybase"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-tidy"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-xml"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-xsl"
        },
        {
            "binary_version": "8.5.4-0ubuntu1.1",
            "binary_name": "php8.5-zip"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7259.json"