CVE-2026-73572CWE-79cross-site-scripting

CVE-2026-73572

Medium · published August 13, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
17.1
In the wild
Unconfirmed
What it is

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, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00263 · 17.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-13T20:19Z
Affected products (1)
ProductVersionsFixed in
synacor/zimbra_collaboration_suite< 10.1.1710.1.17
References (2)
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy · [email protected]https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories · [email protected]
EPSS history
Timeline
  • 13 AUG 15:21Z
    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…
    cvelistv5