What is CVE-2026-47730?

### Description `Twig\Profiler\Dumper\HtmlDumper` writes `Profile::getTemplate()` and `Profile::getName()` straight into its HTML output without escaping: ```php protected function formatTemplate(Profile $profile, $prefix): string { return \sprintf('%s└ %s ', $prefix, self::$colors['template'], $profile->getTemplate()); } ``` The template name comes from the loader (the array key for `ArrayLoader`, a row id for a database-backed loader, etc.). When that name is attacker-controlled, the profiler dump emits arbitrary HTML, and any browser that rend

How severe is CVE-2026-47730?

No CVSS score has been assigned to CVE-2026-47730 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-47730?

CVE-2026-47730 affects the following packages: twig/twig (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-47730?

Update twig/twig to 3.26.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-47730 is resolved across your whole dependency graph.

How do I detect CVE-2026-47730 in my Packagist dependencies?

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.

How do I mitigate CVE-2026-47730 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2026-47730 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-47730 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-47730?

CVE-2026-47730 has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 21th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-47730?

CVE-2026-47730 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-47730 published, and has it been updated?

CVE-2026-47730 was published on July 14, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2026-47730 — twig

Fix: twigphp/Twig@a5f6e87

CVE-2026-47730 is a Cross-site Scripting (XSS) vulnerability in twig/twig. A fix is available for twig/twig — see the affected versions and patch details below.

Twig: XSS in profiler HtmlDumper via unescaped template and profile names

Also known asGHSA-2g2g-8p8h-fgwm

Published

Jul 14, 2026

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 18, 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-2026-47730.

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs21th percentile — riskier than 21% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

🐘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

Twig\Profiler\Dumper\HtmlDumper writes Profile::getTemplate() and Profile::getName() straight into its HTML output without escaping:

protected function formatTemplate(Profile $profile, $prefix): string
{
    return \sprintf('%s└ <span style="background-color: %s">%s</span>', $prefix, self::$colors['template'], $profile->getTemplate());
}

The template name comes from the loader (the array key for ArrayLoader, a row id for a database-backed loader, etc.). When that name is attacker-controlled, the profiler dump emits arbitrary HTML, and any browser that renders it executes the injected markup. This is an output-encoding bug in profiler/debug tooling, not a sandbox escape.

Resolution

HtmlDumper now runs both Profile::getTemplate() and Profile::getName() through htmlspecialchars() before inserting them into the HTML output.

Credits

Twig would like to thank El Kharoubi Iosif for reporting the issue and Nicolas Grekas for fixing it.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`twig/twig`	≥ 3.0.0&&< 3.26.0	3.26.0`composer require twig/twig:^3.26.0`

Affected Products

1 product · 1 configurations

Application

twigsymfony

≥ 3.0.0 && < 3.26.0

range

Detection & mitigation playbook

Open-source dependency

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.
Fix
Update twig/twig to 3.26.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-47730 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### Description `Twig\Profiler\Dumper\HtmlDumper` writes `Profile::getTemplate()` and `Profile::getName()` straight into its HTML output without escaping: ```php protected function formatTemplate(Profile $profile, $prefix): string { return \sprintf('%s└ <span style="background-color: %s">%s</span>', $prefix, self::$colors['template'], $profile->getTemplate()); } ``` The template name comes from the loader (the array key for `ArrayLoader`, a row id for a database-backed loader, etc.). When that name is attacker-controlled, the profiler dump emits arbitrary HTML, and any browser that rend

O3 Security · Impact-Aware SCA

Is CVE-2026-47730 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVE-2026-47730 — twig

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

Real-World Exposure

Description

Description

Resolution

Credits

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2026-47730 in your dependencies?