CVE-2026-40565
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductFreescout
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- freescout freescout1.8.213 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freescout freescout | v < 1.8.213 | 1.8.213 |
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