Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
NVD Vulnerability Details :
CVE-2026-40565
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-21 Apr, 2026 | 16:16
Updated At-22 Apr, 2026 | 17:34

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.1MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CPE Matches
freescout
freescout
>>freescout>>Versions before 1.8.213(exclusive)
cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-79Secondarysecurity-advisories@github.com
CWE ID: CWE-79
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1eac2dfsecurity-advisories@github.com
Patch
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213security-advisories@github.com
Release Notes
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjpsecurity-advisories@github.com
Vendor Advisory
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp134c704f-9b21-4f2e-91b3-4a467353bcc0
Vendor Advisory
Hyperlink: https://github.com/freescout-help-desk/freescout/commit/265379b3ae343f06846adc0aa8510643d1eac2df
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp
Source: security-advisories@github.com
Resource:
Vendor Advisory
Hyperlink: https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-49pm-xwqj-vwjp
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Vendor Advisory
Change History
0Changes found
Details not found