Zimbra - Cross-Site Scripting via ICS Files

Detects Zimbra Collaboration Suite versions vulnerable to CVE-2025-27915, a stored XSS vulnerability in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an email with a malicious ICS entry, embedded JavaScript executes via an ontoggle event...

CVE-2026-93647 Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Crafted Calendar COUNTER Message From Address

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...

CVE-2026-93647

The Zimbra Collaboration Suite Classic Web Client is vulnerable to a stored Cross-Site Scripting (XSS) flaw. An unauthenticated calendar sender can inject active markup into the RFC From address of a COUNTER message . When a user selects this message within Zimbra Classic, the XSS is triggered, p...

CVE-2026-93641

The Zimbra Collaboration Suite Classic Web Client is vulnerable to Stored Cross-Site Scripting (XSS) . An unauthenticated sender can forge a share notification that, when clicked by a signed-in recipient, executes malicious scripts. This allows an attacker to access mailbox data and act as the vi...

CVE-2026-93641 Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation

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...

When Business Email Compromise Starts Rewriting Reality

Business Email Compromise BEC operates on a familiar playbook. Threat actors breach a mailbox, silently monitor operations, map approval chains, and ultimately exploit that access to divert funds or exfiltrate sensitive assets. This dynamic is central to our analysis as we kick off a series aroun...

CVE-2026-73572

In Zimbra Collaboration ZCS before 10.1.17, a stored cross-site scripting XSS vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that,...

CVE-2026-73574

Zimbra Collaboration versions before 10.1.17 are affected by a local file inclusion (LFI) vulnerability in the Forward servlet of the Classic Web Client. The root cause is improper validation of the fu request parameter, allowing an unauthenticated attacker to supply a crafted path and disclose p...

CVE-2026-73572

In Zimbra Collaboration ZCS before 10.1.17, a stored cross-site scripting XSS vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that,...

EUVD-2026-58071

In Zimbra Collaboration ZCS before 10.1.17, a stored cross-site scripting XSS vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that,...

CVE-2026-73574: Incorrect Resource Transfer Between Spheres

In Zimbra Collaboration before 10.1.17, a local file inclusion LFI vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorize...

PT-2026-71678

Name of the Vulnerable Software and Affected Versions Zimbra Collaboration ZCS versions prior to 10.1.17 Description A stored cross-site scripting XSS issue exists in the Zimbra Classic Web Client. This occurs because the system does not sufficiently sanitize specific attachment content during...

CVE-2026-73572: Improper Neutralization of Input During Web Page Generation

In Zimbra Collaboration ZCS before 10.1.17, a stored cross-site scripting XSS vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that,...

Critical Zimbra Flaw Could Let Crafted Emails Run Malicious Code in User Sessions

Zimbra is urging customers to apply updates to address a critical security vulnerability impacting the Classic Web Client that could result in arbitrary code execution. The vulnerability has been described as a case of stored cross-site scripting XSS that could allow specially crafted emails to...

Zimbra Collaboration Server 9.x < 9.0.0 Patch 39, 10.0.x < 10.0.13, 10.1.x < 10.1.5 XSS

According to its self-reported version number, Zimbra Collaboration Server is affected by the following vulnerability including:A stored cross-site scripting XSS vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML. Using a specifically crafted email, a attacker...

Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability

Synacor Zimbra Collaboration Suite ZCS contains a cross-site scripting vulnerability that exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an...

EUVD-2025-7823

Malicious code in bioql PyPI...

CVE-2023-37580

Zimbra Collaboration ZCS 8 before 8.8.15 Patch 41 allows XSS in the Zimbra Classic Web Client...

CVE-2025-27915: Improper Neutralization of Input During Web Page Generation

An issue was discovered in Zimbra Collaboration ZCS 9.0 and 10.0 and 10.1. A stored cross-site scripting XSS vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its...

Zimbra Collaboration Server 安全漏洞

Zimbra Collaboration Server ZCS is an email and collaboration solution from Zimbra. The solution provides email, contacts, calendaring, file sharing, social networking, and other features. A security vulnerability exists in Zimbra Collaboration Server versions 9.0, 10.0, and 10.1, which stems fro...