Vulnerability-Lookup

CVE-2026-46638 (GCVE-0-2026-46638)

Vulnerability from cvelistv5 – Published: 2026-07-14 21:23 – Updated: 2026-07-15 12:48

Title

Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete fix for CVE-2024-45411)

Summary

Twig is a template language for PHP. Prior to 3.26.0, {% sandbox %}{% include %} can include a template that was previously loaded outside the sandbox without re-invoking checkSecurity(), allowing the cached template to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). This issue is fixed in version 3.26.0.

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-15 12:47 UTC

CWE

CWE-693 - Protection Mechanism Failure

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/twigphp/Twig/security/advisori…	x_refsource_CONFIRM
https://github.com/twigphp/Twig/commit/819c6a89fe…	x_refsource_MISC
https://github.com/twigphp/Twig/releases/tag/v3.26.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
twigphp	Twig	Affected: < 3.26.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-46638

Vulnerability from fkie_nvd - Published: 2026-07-14 22:16 - Updated: 2026-07-16 03:11

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/twigphp/Twig/commit/819c6a89fe0f261b8555c4f4d5e27d31984223ea	Patch
security-advisories@github.com	https://github.com/twigphp/Twig/releases/tag/v3.26.0	Release Notes
security-advisories@github.com	https://github.com/twigphp/Twig/security/advisories/GHSA-7fxw-r6jv-74c8	Vendor Advisory

Impacted products

	Vendor	Product	Version
	symfony	twig	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Twig",
          "vendor": "twigphp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.26.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
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          "operator": "OR"
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      "value": "Twig is a template language for PHP. Prior to 3.26.0, {% sandbox %}{% include %} can include a template that was previously loaded outside the sandbox without re-invoking checkSecurity(), allowing the cached template to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). This issue is fixed in version 3.26.0."
    }
  ],
  "id": "CVE-2026-46638",
  "lastModified": "2026-07-16T03:11:19.287",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
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        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
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    }
  ],
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}

GHSA-7FXW-R6JV-74C8

Vulnerability from github – Published: 2026-05-21 21:28 – Updated: 2026-05-21 21:28

Summary

Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete fix for CVE-2024-45411)

Details

Description

The fix for CVE-2024-45411 / GHSA-6j75-5wfj-gh66 added an explicit $loaded->unwrap()->checkSecurity() call in CoreExtension::include() so that a template already cached in Environment::$loadedTemplates is re-checked when included with sandboxed = true.

The deprecated but still functional {% sandbox %}{% include ... %}{% endsandbox %} tag path was not updated: it compiles to enableSandbox(); yield from $this->load(...)->unwrap()->yield(...); disableSandbox(); with no checkSecurity() re-invocation. If the included template was loaded once outside the sandbox in the same Environment instance, its constructor (and therefore its compiled checkSecurity() call) already ran while isSandboxed() was false, so the tags/filters/functions allowlist enforced by SecurityPolicy::checkSecurity() is never applied.

An attacker who can author the included template gains access to every filter, function and tag registered in the environment, regardless of the sandbox policy.

Resolution

The compiled output of {% sandbox %}{% include %} now calls checkSecurity() on the loaded template, matching the behaviour of CoreExtension::include() with sandboxed = true.

Credits

Twig would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.

Severity

5.8 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "twig/twig"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.26.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-46638"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-21T21:28:28Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Description\n\nThe fix for CVE-2024-45411 / GHSA-6j75-5wfj-gh66 added an explicit `$loaded-\u003eunwrap()-\u003echeckSecurity()` call in `CoreExtension::include()` so that a template already cached in `Environment::$loadedTemplates` is re-checked when included with `sandboxed = true`.\n\nThe deprecated but still functional `{% sandbox %}{% include ... %}{% endsandbox %}` tag path was not updated: it compiles to `enableSandbox(); yield from $this-\u003eload(...)-\u003eunwrap()-\u003eyield(...); disableSandbox();` with no `checkSecurity()` re-invocation. If the included template was loaded once outside the sandbox in the same `Environment` instance, its constructor (and therefore its compiled `checkSecurity()` call) already ran while `isSandboxed()` was `false`, so the tags/filters/functions allowlist enforced by `SecurityPolicy::checkSecurity()` is never applied.\n\nAn attacker who can author the included template gains access to every filter, function and tag registered in the environment, regardless of the sandbox policy.\n\n### Resolution\n\nThe compiled output of `{% sandbox %}{% include %}` now calls `checkSecurity()` on the loaded template, matching the behaviour of `CoreExtension::include()` with `sandboxed = true`.\n\n### Credits\n\nTwig would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.",
  "id": "GHSA-7fxw-r6jv-74c8",
  "modified": "2026-05-21T21:28:28Z",
  "published": "2026-05-21T21:28:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/twigphp/Twig/security/advisories/GHSA-7fxw-r6jv-74c8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46638.yaml"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6j75-5wfj-gh66"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/twigphp/Twig"
    },
    {
      "type": "WEB",
      "url": "https://symfony.com/cve-2026-46638"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete fix for CVE-2024-45411)"
}

ubuntu-cve-2026-46638

Vulnerability from osv_ubuntu

Published

2026-07-14 22:16

Modified

2026-07-17 12:39

Summary

Details

Severity

6.0 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

8.1 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-46638	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-46638	REPORT
	https://symfony.com/blog/cve-2026-46638-sandbox-i…	REPORT

JSON

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 3.26.0, {% sandbox %}{% include %} can include a template that was previously loaded outside the sandbox without re-invoking checkSecurity(), allowing the cached template to use tags, filters, and functions that should have been denied by SecurityPolicy::checkSecurity(). This issue is fixed in version 3.26.0.",
  "id": "UBUNTU-CVE-2026-46638",
  "modified": "2026-07-17T12:39:05Z",
  "published": "2026-07-14T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-46638"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46638"
    },
    {
      "type": "REPORT",
      "url": "https://symfony.com/blog/cve-2026-46638-sandbox-include-skips-checksecurity-on-cached-templates-incomplete-fix-for-cve-2024-45411"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-46638"
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-46638 (GCVE-0-2026-46638)

FKIE_CVE-2026-46638

GHSA-7FXW-R6JV-74C8

Description

Resolution

Credits

ubuntu-cve-2026-46638

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour