CVE-2026-93641NVD

Vulnerability Summary

An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.

Severity Level

CRITICAL(9.3)

Published Date

Sep 25, 2026

Last Modified

Sep 25, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-79: Cross-site Scripting (XSS) ↗

The software does not neutralize user-controllable input before it is placed in output that is used as a web page.

CVSS v3.1 Base Metrics — Score 9.3 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

Affected & Patched Versions

Affected Versions

Not provided by NVD for this CVE.

Patched Versions

Not provided by NVD for this CVE.

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