CVE-2026-47730 Twig: XSS in profiler HtmlDumper via unescaped template and profile names
Attacker-controlled template or profile names can inject arbitrary HTML in the Twig profiler dump, requiring the profiler to be enabled and viewed.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-47730?
CVE-2026-47730 is a medium-severity cross-site scripting vulnerability in twigphp Twig, published on 14 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Twig is a template language for PHP. From 3.0.0 until 3.26.0, Twig\Profiler\Dumper\HtmlDumper writes Profile::getTemplate() and Profile::getName() into HTML output without escaping, allowing attacker-controlled template or profile names to inject arbitrary HTML when a browser renders the profiler dump. This issue is fixed in version 3.26.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-47730?
2 open source packages ship an affected version, including twig/twig. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
twig/twig Packagist | From 3.0.0 | 3.26.0 |
twig/twig Packagist | From 3.0.0 | 3.26.0 |
Products include Symfony Twig.
How do I fix CVE-2026-47730?
Upgrade twig/twig to 3.26.0 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-47730 being exploited?
There is no known exploitation of CVE-2026-47730 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-2026-47730, GHSA-2g2g-8p8h-fgwm, UBUNTU-CVE-2026-47730.