CVE-2026-33373An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1.
Updated under an hour ago ()
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It affects synacor zimbra_collaboration_suite. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A Cross-Site Request Forgery (CSRF) vulnerability exists in Zimbra Web Client due to the issuance of authentication tokens without CSRF protection during certain account state transitions. Specifically, tokens generated after operations such as enabling two-factor authentication or changing a password may lack CSRF enforcement. While such a token is active, authenticated SOAP requests that trigger token generation or state changes can be performed without CSRF validation. An attacker could exploit this by inducing a victim to submit crafted requests, potentially allowing sensitive account actions such as disabling two-factor authentication. The issue is mitigated by ensuring CSRF protection is consistently enforced for all issued authentication tokens.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-352
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
synacor zimbra_collaboration_suite synacor:zimbra_collaboration_suite | from 10.0.0 before 10.0.18; from 10.1.0 before 10.1.13 | NVD |
References
- https://wiki.zimbra.com/wiki/Security_Centerrelease-notes, vendor-advisory
- https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18#Security_Fixesrelease-notes
- https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13#Security_Fixesrelease-notes
- https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policyproduct
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.