CVE-2026-48806

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105	Patch
https://github.com/twigphp/Twig/releases/tag/v3.27.0	Release Notes
https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*

History

17 Jul 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105 -~~	() https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105 - Patch
References	~~() https://github.com/twigphp/Twig/releases/tag/v3.27.0 -~~	() https://github.com/twigphp/Twig/releases/tag/v3.27.0 - Release Notes
References	~~() https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v -~~	() https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v - Vendor Advisory
First Time		Symfony Symfony twig
CPE		cpe:2.3:a:symfony:twig::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1

14 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-14 22:17

Updated : 2026-07-17 03:17

NVD link : CVE-2026-48806

Mitre link : CVE-2026-48806

CVE.ORG link : CVE-2026-48806

JSON object : View

Products Affected

symfony

twig

CWE

CWE-693

Protection Mechanism Failure

CWE-863

Incorrect Authorization

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