CVE-2026-73524

Cypht before 2.12.2 contains a cross-site scripting vulnerability in the contacts module that allows remote attackers to execute arbitrary script content by embedding malicious payloads within angle brackets in the FROM email header. The sanitization logic removes only the first occurrence of each angle bracket character, leaving additional angle brackets intact, which attackers exploit by delivering a crafted email whose FROM header executes script in the victim's browser when the user opens the message and accesses the Add Local Contacts function.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/cypht-org/cypht/commit/372343783b3d21c12f74bb88d0eef36c1579c062
https://github.com/cypht-org/cypht/pull/2072
https://github.com/cypht-org/cypht/releases/tag/v2.12.2
https://www.vulncheck.com/advisories/cypht-xss-via-from-email-header-in-contacts-module

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 21:18

Updated : 2026-09-08 20:18

NVD link : CVE-2026-73524

Mitre link : CVE-2026-73524

CVE.ORG link : CVE-2026-73524

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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