CVE-2022-24682
Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Zimbra Collaborate Suite (ZCS), fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Mar 11, 2022.
Patch status
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
Description
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Fixed in | Source |
|---|---|---|---|---|
| Zimbra Collaborate Suite (ZCS) | Synacor | — | — | KEV |
| Zimbra Collaboration Suite | Synacor | >= 8.8.0, < 8.8.15; 8.8.15 | 8.8.15 | NVD |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog; NVD = NIST National Vulnerability Database.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2022-24682 scored CVSS 6.1: Synacor Zimbra Collaborate Suite (ZCS), Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability
CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched Zimbra Collaborate Suite (ZCS) systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
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Coverage
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