CVE-2024-51755 Unguarded calls to __isset() and to array-accesses when the sandbox is enabled in Twig
Attackers can bypass security policies to access attributes of Array-like objects in Twig templates when the sandbox is enabled.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-51755?
CVE-2024-51755 is a low-severity missing authorization vulnerability in twigphp Twig, published on 6 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Twig is a template language for PHP. In a sandbox, an attacker can access attributes of Array-like objects as they were not checked by the security policy. They are now checked via the property policy and the `__isset()` method is now called after the security check. This is a BC break. This issue has been patched in versions 3.11.2 and 3.14.1. All users are advised to upgrade. There are no known workarounds for this issue.
Weakness: CWE-668
Which versions are affected by CVE-2024-51755?
4 open source packages ship an affected version, including twig/twig.
| Package | Affected | Fixed in |
|---|---|---|
twig/twig Packagist | All versions | 3.11.2 |
twig/twig Packagist | All versions | 3.11.2 |
twig/twig Packagist | From 3.12 | 3.14.1 |
twig/twig Packagist | From 3.12 | 3.14.1 |
How do I fix CVE-2024-51755?
Upgrade twig/twig to a fixed version for your release line: 3.11.2 or 3.14.1.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2024-51755 being exploited?
There is no known exploitation of CVE-2024-51755 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1788348414, DEBIAN-CVE-2024-51755, GHSA-jjxq-ff2g-95vh, UBUNTU-CVE-2024-51755.