CVE-2026-93647

Published: Sep 25, 2026Modified: Sep 29, 2026

9.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Exploitability: 2.8 / Impact: 5.8

Source: cve@rapid7.com (Secondary)

Description

An unauthenticated calendar sender can place active markup in a COUNTER message's RFC From address. Selecting the message in Zimbra Classic triggers stored XSS, allowing the attacker to access mailbox data and act as the victim.

Related CWEs

CWE-79

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

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (1)

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Source: cve@rapid7.com

Timeline

No history available yet.