CVE-2026-73571
3.1 · LOWOverview
CVE-2026-73571 is a low-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on August 13, 2026 and has a CVSS 3.1 base score of 3.1 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Remediation
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| synacor | zimbra_collaboration_suite | >= 0, < 10.1.17 | Affected |
Frequently Asked Questions
What is CVE-2026-73571?
CVE-2026-73571 is a low-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on August 13, 2026 and has a CVSS 3.1 base score of 3.1 (LOW).
How severe is CVE-2026-73571?
This vulnerability has a CVSS 3.1 base score of 3.1, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-73571?
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-73571?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-73571 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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