# CVE-2026-46627: Twig: Sandbox resource exhaustion via unbounded `for` / `range()`


- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 14 Jul 2026
- **Updated:** 16 Jul 2026
- **Also known as:** DEBIAN-CVE-2026-46627, GHSA-923g-j88x-j34q, UBUNTU-CVE-2026-46627

## What is CVE-2026-46627?

CVE-2026-46627 is a high-severity vulnerability in twigphp Twig, published on 14 Jul 2026. 

### Official description

Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-46627?

It affects 1 product.


Products: Symfony Twig.

## How do I fix CVE-2026-46627?

Upgrade to a fixed version.

## Is CVE-2026-46627 being exploited?

There is no known exploitation of CVE-2026-46627 in the wild and no public exploit code.

## Other vulnerabilities in twigphp Twig

- [CVE-2018-13818](https://insights.sbomify.com/CVE-2018-13818/): Code injection in n/a (critical 9.8)
- [CVE-2026-46633](https://insights.sbomify.com/CVE-2026-46633/): Twig: PHP code injection via `{% use %}` template name (high 8.7)
- [CVE-2026-46640](https://insights.sbomify.com/CVE-2026-46640/): Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation (high 8.7)
- [CVE-2026-24425](https://insights.sbomify.com/CVE-2026-24425/): Twig 2.16.x & 3.9.0-3.25.x Sandbox Bypass via SourcePolicyInterface (high 8.7)
- [CVE-2024-45411](https://insights.sbomify.com/CVE-2024-45411/): Twig has a possible sandbox bypass (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-46627 and fix it if it is affected.

What it is: CVE-2026-46627 is a high-severity vulnerability in twigphp Twig, published on 14 Jul 2026. 
Exploitation: There is no known exploitation of CVE-2026-46627 in the wild and no public exploit code.

Affected product: twigphp Twig. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-46627/ (Markdown: https://insights.sbomify.com/CVE-2026-46627/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-46627
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-46627
- OSV: https://osv.dev/vulnerability/CVE-2026-46627

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-46627/
Summaries are generated and may contain mistakes; the official description above is the record.