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CVE-2026-40565

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published4/21/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Affected Products

freescout:freescout

Weaknesses (CWE)

CWE-79

References

https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1eac2df(security-advisories@github.com)

https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213(security-advisories@github.com)

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp(security-advisories@github.com)

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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