CVE-2026-33372

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1

Medium · published March 20, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
11.5
In the wild
Unconfirmed
What it is

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00217 · 11.5th percentile
Published
2026-03-20T00:00Z
EPSS history
Timeline
  • 20 MAR 00:00Z
    An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1
    cvelistv5