CVE-2025-27109

Public Exploit
Lack of Escaping of HTML in JSX Fragments allows for Cross-site Scripting in solid-js

Description

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.

Category

7.3
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.07%
Affected: solidjs solid
Published at:
Updated at:

References

Link Tags
https://github.com/solidjs/solid/security/advisories/GHSA-3qxh-p7jc-5xh6
https://github.com/solidjs/solid/commit/b93956f28ed75469af6976a98728e313d0edd236

Frequently Asked Questions

What is the severity of CVE-2025-27109?
CVE-2025-27109 has been scored as a high severity vulnerability.
How to fix CVE-2025-27109?
To fix CVE-2025-27109, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-27109 being actively exploited in the wild?
It is possible that CVE-2025-27109 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-27109?
CVE-2025-27109 affects solidjs solid.
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