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.
Affected products
freescout: freescout
References4
- github.com/freescout-help-desk/freescout/security/advisories/GH… Vendor Advisory
- github.com/freescout-help-desk/freescout/security/advisories/GH… Vendor Advisory
- github.com/freescout-help-desk/freescout/commit/265379b3ae343f0… Patch
- github.com/freescout-help-desk/freescout/releases/tag/1.8.213 Release Notes
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 10 · as of 13 November 2026
- CWE
- CWE-79
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