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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00238.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
twigphp Twig affected
Version Status Constraints
< 3.27.0 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Twigphp Subscribe
Twig Subscribe

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-5v5v-ww74-355v Twig: Sandbox `__toString()` policy bypass via dynamic mapping keys
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105 cve-icon
https://github.com/twigphp/Twig/releases/tag/v3.27.0 cve-icon
https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v cve-icon
History

Wed, 15 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Twigphp
Twigphp twig
Vendors & Products Twigphp
Twigphp twig

Wed, 15 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 14 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Twig: Sandbox `__toString()` policy bypass via dynamic mapping keys
Weaknesses CWE-693
CWE-863
References
Metrics cvssV4_0

{'score': 7.1, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-15T12:47:14.623Z

Reserved: 2026-05-22T20:57:10.975Z

Link: CVE-2026-48806

cve-icon Vulnrichment

Updated: 2026-07-15T12:47:09.633Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-15T17:00:10Z

Weaknesses