{"id":"CVE-2026-40565","aliases":["EUVD-2026-24141","GHSA-49pm-xwqj-vwjp"],"status":"published","title":"FreeScout has Stored XSS / CSS Injection via linkify() — Unescaped URL in Anchor href","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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00199,"percentile":0.0976,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-04-21T15:52:39Z","modified":"2026-10-28T02:31:08Z","products":[{"vendor":"freescout","product":"freescout"},{"vendor":"freescout-help-desk","product":"freescout"}],"references":[{"url":"https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp","tags":["x_refsource_CONFIRM","exploit","Vendor Advisory","advisory"]},{"url":"https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1eac2df","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40565.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40565","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-40565","title":"FreeScout has Stored XSS / CSS Injection via linkify() — Unescaped URL in Anchor href","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.","status":"published","published":"2026-04-21T15:52:39.118Z","modified":"2026-04-21T19:48:40.654Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:43:11.445168Z"}],"euvd":[{"id":"EUVD-2026-24141","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.","status":"published","published":"2026-04-21T15:52:39Z","modified":"2026-04-21T19:48:40Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:21.512647Z"}],"nvd":[{"id":"CVE-2026-40565","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.","status":"published","published":"2026-04-21T16:16:20.39Z","modified":"2026-06-17T10:45:27.707Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:15.493943Z"}],"osv":[{"id":"CVE-2026-40565","title":"FreeScout has Stored XSS / CSS Injection via linkify() — Unescaped URL in Anchor href","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.","status":"published","published":"2026-04-21T15:52:39.118Z","modified":"2026-10-28T02:31:08.613902225Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:03.424067Z"}]}}