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LOW severity

CVE-2024-51754 — twig

LOWFix: twigphp/Twig@2bb8c24

CVE-2024-51754 is a low-severity (CVSS 2.2) CWE-668 vulnerability in twig/twig. A fix is available for twig/twig — see the affected versions and patch details below.

Unguarded calls to __toString() when nesting an object into an array in Twig

Also known asGHSA-6377-hfv9-hqf6
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-51754.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs38th percentile — riskier than 38% of all scored CVEsHighest risk
0.00%0.31%0.63%0.94%0.1%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
🐘twig/twig🐘twig/twig

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Description

In a sandbox, an attacker can call __toString() on an object even if the __toString() method is not allowed by the security policy when the object is part of an array or an argument list (arguments to a function or a filter for instance).

Resolution

The sandbox mode now checks the __toString() method call on all objects.

The patch for this issue is available here for the 3.11.x branch, and here for the 3.x branch.

Credits

We would like to thank Jamie Schouten for reporting the issue and Fabien Potencier for providing the fix.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttwig/twigall versions3.11.2composer require twig/twig:^3.11.2
🐘Packagisttwig/twig≥ 3.12&&< 3.14.13.14.1composer require twig/twig:^3.14.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for twig/twig, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update twig/twig to 3.11.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-51754 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Description In a sandbox, an attacker can call `__toString()` on an object even if the `__toString()` method is not allowed by the security policy when the object is part of an array or an argument list (arguments to a function or a filter for instance). ### Resolution The sandbox mode now checks the `__toString()` method call on all objects. The patch for this issue is available [here](https://github.com/twigphp/Twig/commit/cafc608ece310e62a35a76f17e25c04ab9ed05cc) for the 3.11.x branch, and [here](https://github.com/twigphp/Twig/commit/d4a302681bca9f7c6ce2835470d53609cdf3e23e) for th
O3 Security · Impact-Aware SCA

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CVE-2024-51754: twig — Fixed in 3.11.2