CVE-2026-48806
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
Product
Symfony Twig
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-693CWE-693CWE-863Incorrect authorization
How to fix
Update
- symfony twig3.27.0 or later
- twig/twig3.27.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| symfony twig | v < 3.27.0 | 3.27.0 |
| twig/twigPackagist | v < 3.27.0 | 3.27.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.