CVE-2022-24682An 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.
Updated under an hour ago ()
Does this affect you?
It affects synacor zimbra_collaboration_suite. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Feb 25, 2022; federal agencies had to remediate by Mar 11, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-116
- Known exploited
- Added to CISA KEV Feb 25, 2022; federal remediation due Mar 11, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 30.93% (percentile 98)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Aug 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
synacor zimbra_collaboration_suite synacor:zimbra_collaboration_suite | from 8.8.0 before 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; and 23 more ranges | NVD |
References
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesx-refsource-misc, vendor-advisory
- https://wiki.zimbra.com/wiki/Security_Centerx-refsource-misc, vendor-advisory
- https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/x-refsource-misc, exploit, third-party-advisory
- https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/x-refsource-misc, vendor-advisory
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30x-refsource-misc, release-notes, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-24682us-government-resource
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.