What is the severity of CVE-2025-27109?

CVE-2025-27109 has been classified as a high-severity vulnerability due to its ability to allow injection of unescaped HTML from user input.

How do I fix CVE-2025-27109?

To fix CVE-2025-27109, update solid-js to version 1.9.4 or later where the vulnerability is addressed.

What versions of solid-js are affected by CVE-2025-27109?

All versions of solid-js prior to 1.9.4 are affected by CVE-2025-27109.

What kind of vulnerability is CVE-2025-27109?

CVE-2025-27109 is a Cross-Site Scripting (XSS) vulnerability that occurs due to improper escaping of user input.

Can CVE-2025-27109 be exploited remotely?

Yes, CVE-2025-27109 can be exploited remotely by injecting malicious HTML through user input rendered within JSX fragments.

Vulnerability/
CVE-2025-27109

high

7.3

CWE

116 79

21/2/2025

CVE-2025-27109: Lack of Escaping of HTML in JSX Fragments allows for Cross-site Scripting in solid-js

First published: Fri Feb 21 2025(Updated: )

solid-js is a declarative, efficient, and flexible JavaScript library for building user interfaces. In affected versions Inserts/JSX expressions inside illegal inlined JSX fragments lacked escaping, allowing user input to be rendered as HTML when put directly inside JSX fragments. This issue has been addressed in version 1.9.4 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
	<1.9.4

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Frequently Asked Questions

What is the severity of CVE-2025-27109?
CVE-2025-27109 has been classified as a high-severity vulnerability due to its ability to allow injection of unescaped HTML from user input.
How do I fix CVE-2025-27109?
To fix CVE-2025-27109, update solid-js to version 1.9.4 or later where the vulnerability is addressed.
What versions of solid-js are affected by CVE-2025-27109?
All versions of solid-js prior to 1.9.4 are affected by CVE-2025-27109.
What kind of vulnerability is CVE-2025-27109?
CVE-2025-27109 is a Cross-Site Scripting (XSS) vulnerability that occurs due to improper escaping of user input.
Can CVE-2025-27109 be exploited remotely?
Yes, CVE-2025-27109 can be exploited remotely by injecting malicious HTML through user input rendered within JSX fragments.

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Frequently Asked Questions

What is the severity of CVE-2025-27109?
CVE-2025-27109 has been classified as a high-severity vulnerability due to its ability to allow injection of unescaped HTML from user input.
How do I fix CVE-2025-27109?
To fix CVE-2025-27109, update solid-js to version 1.9.4 or later where the vulnerability is addressed.
What versions of solid-js are affected by CVE-2025-27109?
All versions of solid-js prior to 1.9.4 are affected by CVE-2025-27109.
What kind of vulnerability is CVE-2025-27109?
CVE-2025-27109 is a Cross-Site Scripting (XSS) vulnerability that occurs due to improper escaping of user input.
Can CVE-2025-27109 be exploited remotely?
Yes, CVE-2025-27109 can be exploited remotely by injecting malicious HTML through user input rendered within JSX fragments.