Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, FreeScout's linkify() function in app/Misc/Helper.php converts plain-text URLs in email bodies into HTML anchor tags without escaping double-quote characters (") in the URL. HTMLPurifier (called first via getCleanBody()) preserves literal " characters in text nodes. linkify() then wraps URLs including those " chars inside an unescaped href="..." attribute, breaking out of the href and injecting arbitrary HTML attributes. Version 1.8.213 fixes the issue.

INFO

Published Date :

2026-04-21T15:52:39.118Z

Last Modified :

2026-04-21T19:48:40.654Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40565 vulnerability.

Vendors Products
Freescout
  • Freescout
Freescout Helpdesk
  • Freescout
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40565.

URL Resource
https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1eac2df cve-icon cve-icon
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213 cve-icon cve-icon
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact