CVE-2026-47730: twig XSS — Fix

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.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
symfony	twig	3.0.0 — 3.26.0

References

Advisories & Patches

https://github.com/twigphp/Twig/commit/a5f6e8793e603ef34fa86aed2a72f9fbe0b43745 https://github.com/twigphp/Twig/security/advisories/GHSA-2g2g-8p8h-fgwm

Other References

https://github.com/twigphp/Twig/releases/tag/v3.26.0

Frequently Asked Questions

What is CVE-2026-47730? +

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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-47730? +

CVE-2026-47730 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0017, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-47730? +

CVE-2026-47730 affects products from symfony, specifically: twig. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-47730? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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