CVE-2026-73575 Cross-site request forgery in Collaboration
An attacker can perform unauthorized actions on behalf of an authenticated user via CSRF in the EWS endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73575?
CVE-2026-73575 is a low-severity vulnerability in Synacor Zimbra Collaboration Suite, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Weakness: CWE-352
Which versions are affected by CVE-2026-73575?
It affects 1 product.
Products include Synacor Zimbra Collaboration Suite.
How do I fix CVE-2026-73575?
No fix has been published for CVE-2026-73575 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73575 being exploited?
There is no known exploitation of CVE-2026-73575 in the wild and no public exploit code.
Other vulnerabilities in Synacor Zimbra Collaboration Suite
- CVE-2024-45519 Synacor Zimbra Collaboration Suite (ZCS) Command Execution
- CVE-2022-41352 Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload
- CVE-2022-37042 Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass
- CVE-2022-27924 Synacor Zimbra Collaboration Suite (ZCS) Command Injection
- CVE-2020-7796 Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery
Sources
Also known as GHSA-2rhj-982v-52qv.