ubuntu-cve-2026-48806
Vulnerability from osv_ubuntu
Published
2026-07-14 22:17
Modified
2026-07-15 17:52
Summary
Details

Twig is a template language for PHP. Prior to 3.27.0, ArrayExpression does not guard dynamic mapping keys that are coerced to strings, allowing PHP to invoke __toString() on a Stringable object used as a mapping key without calling SandboxExtension::ensureToStringAllowed(). This issue is fixed in version 3.27.0.

Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-twig",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-cssinliner-extra",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-extra-bundle",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-html-extra",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-inky-extra",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-intl-extra",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "php-twig-markdown-extra",
            "binary_version": "2.12.5-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "php-twig",
        "purl": "pkg:deb/ubuntu/php-twig@2.12.5-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.11.3-2",
        "2.12.1-1",
        "2.12.2-1",
        "2.12.3-1",
        "2.12.5-1",
        "2.12.5-1ubuntu0.1~esm1",
        "2.12.5-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-twig",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-cache-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-cssinliner-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-extra-bundle",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-html-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-inky-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-intl-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-markdown-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          },
          {
            "binary_name": "php-twig-string-extra",
            "binary_version": "3.3.8-2ubuntu4+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "php-twig",
        "purl": "pkg:deb/ubuntu/php-twig@3.3.8-2ubuntu4+esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3.2-1ubuntu3",
        "3.3.4-1",
        "3.3.6-1",
        "3.3.7-1",
        "3.3.8-2ubuntu4",
        "3.3.8-2ubuntu4+esm1",
        "3.3.8-2ubuntu4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-twig",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-cache-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-cssinliner-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-extra-bundle",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-html-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-inky-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-intl-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-markdown-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          },
          {
            "binary_name": "php-twig-string-extra",
            "binary_version": "3.8.0-2ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "php-twig",
        "purl": "pkg:deb/ubuntu/php-twig@3.8.0-2ubuntu1+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.0-1",
        "3.7.1-1",
        "3.8.0-2",
        "3.8.0-2ubuntu0.1~esm1",
        "3.8.0-2ubuntu1",
        "3.8.0-2ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-twig",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-cache-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-cssinliner-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-extra-bundle",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-html-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-inky-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-intl-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-markdown-extra",
            "binary_version": "3.20.0-2ubuntu1"
          },
          {
            "binary_name": "php-twig-string-extra",
            "binary_version": "3.20.0-2ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "php-twig",
        "purl": "pkg:deb/ubuntu/php-twig@3.20.0-2ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.20.0-2ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-twig",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-cache-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-cssinliner-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-extra-bundle",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-html-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-inky-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-intl-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-markdown-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "php-twig-string-extra",
            "binary_version": "3.23.0-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "php-twig",
        "purl": "pkg:deb/ubuntu/php-twig@3.23.0-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.20.0-2ubuntu1",
        "3.23.0-2build5",
        "3.23.0-2build7",
        "3.23.0-2ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "Twig is a template language for PHP. Prior to 3.27.0, ArrayExpression does not guard dynamic mapping keys that are coerced to strings, allowing PHP to invoke __toString() on a Stringable object used as a mapping key without calling SandboxExtension::ensureToStringAllowed(). This issue is fixed in version 3.27.0.",
  "id": "UBUNTU-CVE-2026-48806",
  "modified": "2026-07-15T17:52:47Z",
  "published": "2026-07-14T22:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48806"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-48806"
    },
    {
      "type": "REPORT",
      "url": "https://symfony.com/blog/cve-2026-48806-sandbox-tostring-policy-bypass-via-dynamic-mapping-keys"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-48806"
  ]
}



Log in or create an account to share your comment.




Tags
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.