CVE-2026-48808 Twig: Sandbox property allowlist bypass via the `column` filter under `SourcePolicyInterface`
A flaw in Twig's column filter bypasses sandbox property restrictions, allowing template authors to read unauthorized public or magic properties.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48808?
CVE-2026-48808 is a medium-severity vulnerability in twigphp Twig, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Twig is a template language for PHP. Prior to 3.27.0, the column filter passes the active sandbox state as a boolean but does not forward the current Source to SandboxExtension::checkPropertyAllowed(), so SourcePolicyInterface decisions are lost and a template author can read public or magic properties not allowed by the sandbox policy. This issue is fixed in version 3.27.0.
Which versions are affected by CVE-2026-48808?
2 open source packages ship an affected version, including twig/twig. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
twig/twig Packagist | All versions | 3.27.0 |
twig/twig Packagist | All versions | 3.27.0 |
Products include Symfony Twig.
How do I fix CVE-2026-48808?
Upgrade twig/twig to 3.27.0 or later.
Is CVE-2026-48808 being exploited?
There is no known exploitation of CVE-2026-48808 in the wild and no public exploit code.
Other vulnerabilities in twigphp Twig
- CVE-2018-13818 Code injection in n/a
- CVE-2026-46633 Twig: PHP code injection via `{% use %}` template name
- CVE-2026-46640 Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation
- CVE-2026-24425 Twig 2.16.x & 3.9.0-3.25.x Sandbox Bypass via SourcePolicyInterface
- CVE-2024-45411 Twig has a possible sandbox bypass
Sources
Also known as DEBIAN-CVE-2026-48808, GHSA-h8vq-8gpg-mhcg, UBUNTU-CVE-2026-48808.