CVE-2026-40565
mediumFreeScout is a free self-hosted help desk and shared mailbox.
Vendor / product: Freescout — freescout
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.
CVSS
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-04-21 16:16
Modified: 2026-11-11 23:10
NVD status: Analyzed
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:12 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freescout / freescout <1.8.213
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp
References
- https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1... 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
Data sources
NVD CVE API 2.0 — fetched 2026-11-11 23:12 UTC · record ↗