NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-40565
Summary

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.

Publication Date April 22, 2026, 1:16 a.m.
Registration Date April 25, 2026, 4:03 a.m.
Last Update April 23, 2026, 2:34 a.m.
CVSS3.1 : MEDIUM
スコア 6.1
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI)
影響の想定範囲(S) 変更あり
機密性への影響(C)
完全性への影響(I)
可用性への影響(A) なし
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:* 1.8.213
Related information, measures and tools
Common Vulnerabilities List