Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
A reflected cross-site scripting vulnerability in the Classic Web Client of Zimbra Collaboration Suite (ZCS) allows an attacker to inject JavaScript through the packages parameter of the /h/rest document editor. The editor inserts package names into script attributes without HTML encoding. When combined with CVE-2026-50053, an attacker with an ordinary Zimbra account can supply their own authentication token and document identifiers in a URL and execute JavaScript in another signed-in user's Zimbra browser session when that user opens the URL. This permits reading mailbox data and performing authenticated actions as the victim. The issue affects ZCS 10.1.16 and was remediated in 10.1.17.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Rapid7 disclosed 17 Zimbra Collaboration Suite flaws, including CVE-2026-10632 and CVE-2026-93640, allowing XSS and root privilege escalation. #Zimbra #Rapid7 #EmailSecurity #PrivilegeEscalation #XSS #Cybersecurity #Vulnerability #InfoSec https://securityonline.info/zimbra-collaboration-suite-vulnerabilities-rapid7/