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usn-8743-1
Vulnerability from osv_ubuntu
Published
2026-09-10 11:48
Modified
2026-09-10 11:48
Summary
php8.1, php8.3, php8.5 vulnerabilities
Details

It was discovered that PHP incorrectly handled backslash escaping in the PostgreSQL extension. An attacker could use this issue to perform SQL injection attacks. (CVE-2026-17543)

It was discovered that PHP incorrectly handled certain inputs to the bccomp() function. An attacker could use this issue to cause an out-of- bounds write, resulting in a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-17544)

It was discovered that PHP incorrectly handled circular symbolic links in phar archives. An attacker could use this issue to cause unbounded recursion, resulting in a denial of service. (CVE-2026-7260)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-7260",
              "severity": [
                {
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                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-17543",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libapache2-mod-php7.4",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "libapache2-mod-php8.0",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "libapache2-mod-php8.1",
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          {
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            "binary_name": "php8.1-curl",
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          },
          {
            "binary_name": "php8.1-dba",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "php8.1-enchant",
            "binary_version": "8.1.2-1ubuntu2.26"
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          {
            "binary_name": "php8.1-fpm",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "php8.1-gd",
            "binary_version": "8.1.2-1ubuntu2.26"
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          {
            "binary_name": "php8.1-gmp",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "php8.1-imap",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
          {
            "binary_name": "php8.1-interbase",
            "binary_version": "8.1.2-1ubuntu2.26"
          },
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            "binary_name": "php8.1-intl",
            "binary_version": "8.1.2-1ubuntu2.26"
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          {
            "binary_name": "php8.1-ldap",
            "binary_version": "8.1.2-1ubuntu2.26"
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            "binary_name": "php8.1-mbstring",
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            "binary_name": "php8.1-mysql",
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            "binary_name": "php8.1-odbc",
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            "binary_name": "php8.1-opcache",
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            "binary_name": "php8.1-pgsql",
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            "binary_name": "php8.1-phpdbg",
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            "binary_version": "8.1.2-1ubuntu2.26"
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            "binary_name": "php8.1-soap",
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            "binary_name": "php8.1-sqlite3",
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      },
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      ],
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        "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",
        "8.1.2-1ubuntu2.24",
        "8.1.2-1ubuntu2.25"
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                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
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                }
              ]
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            {
              "id": "CVE-2026-17543",
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                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
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            "binary_version": "8.3.6-0ubuntu0.24.04.11"
          },
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            "binary_version": "8.3.6-0ubuntu0.24.04.11"
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            "binary_name": "php8.3",
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            "binary_name": "php8.3-bcmath",
            "binary_version": "8.3.6-0ubuntu0.24.04.11"
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            "binary_name": "php8.3-dba",
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            "binary_name": "php8.3-enchant",
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            "binary_name": "php8.3-fpm",
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          },
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            "binary_name": "php8.3-gd",
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            "binary_name": "php8.3-gmp",
            "binary_version": "8.3.6-0ubuntu0.24.04.11"
          },
          {
            "binary_name": "php8.3-imap",
            "binary_version": "8.3.6-0ubuntu0.24.04.11"
          },
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            "binary_name": "php8.3-interbase",
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            "binary_name": "php8.3-readline",
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            "binary_name": "php8.3-sqlite3",
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          },
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "php8.3",
        "purl": "pkg:deb/ubuntu/php8.3@8.3.6-0ubuntu0.24.04.11?arch=source\u0026distro=noble"
      },
      "ranges": [
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        }
      ],
      "versions": [
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        "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",
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        "8.3.6-0ubuntu0.24.04.10"
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    },
    {
      "database_specific": {
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            {
              "id": "CVE-2026-7260",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-17543",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-17544",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libapache2-mod-php8.5",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "libphp8.5-embed",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5",
            "binary_version": "8.5.4-0ubuntu1.3"
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          {
            "binary_name": "php8.5-bcmath",
            "binary_version": "8.5.4-0ubuntu1.3"
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            "binary_name": "php8.5-bz2",
            "binary_version": "8.5.4-0ubuntu1.3"
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            "binary_name": "php8.5-cgi",
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            "binary_name": "php8.5-fpm",
            "binary_version": "8.5.4-0ubuntu1.3"
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            "binary_name": "php8.5-gd",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-gmp",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-interbase",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-intl",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-ldap",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-litespeed",
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          {
            "binary_name": "php8.5-odbc",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
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            "binary_name": "php8.5-pgsql",
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          },
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            "binary_name": "php8.5-phpdbg",
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          },
          {
            "binary_name": "php8.5-readline",
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          },
          {
            "binary_name": "php8.5-snmp",
            "binary_version": "8.5.4-0ubuntu1.3"
          },
          {
            "binary_name": "php8.5-soap",
            "binary_version": "8.5.4-0ubuntu1.3"
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            "binary_name": "php8.5-sqlite3",
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            "binary_name": "php8.5-sybase",
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "php8.5",
        "purl": "pkg:deb/ubuntu/php8.5@8.5.4-0ubuntu1.3?arch=source\u0026distro=resolute"
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      "versions": [
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        "8.5.4-0ubuntu1",
        "8.5.4-0ubuntu1.1",
        "8.5.4-0ubuntu1.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that PHP incorrectly handled backslash escaping in the\nPostgreSQL extension. An attacker could use this issue to perform SQL\ninjection attacks. (CVE-2026-17543)\n\nIt was discovered that PHP incorrectly handled certain inputs to the\nbccomp() function. An attacker could use this issue to cause an out-of-\nbounds write, resulting in a denial of service or possibly execute\narbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-17544)\n\nIt was discovered that PHP incorrectly handled circular symbolic links in\nphar archives. An attacker could use this issue to cause unbounded\nrecursion, resulting in a denial of service. (CVE-2026-7260)",
  "id": "USN-8743-1",
  "modified": "2026-09-10T11:48:08Z",
  "published": "2026-09-10T11:48:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8743-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-7260"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-17543"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-17544"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "php8.1, php8.3, php8.5 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-7260",
    "UBUNTU-CVE-2026-17543",
    "UBUNTU-CVE-2026-17544"
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.