CVE-2022-24682

CVE-2022-24682 is a medium-severity vulnerability in Synacor Zimbra Collaboration Suite with a CVSS 3.x base score of 6.1. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-02-25). The underlying weakness is classified as CWE-116.

Key facts

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.

Frequently asked questions

What is CVE-2022-24682?
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.
How severe is CVE-2022-24682?
CVE-2022-24682 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-24682 being actively exploited?
Yes. CVE-2022-24682 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-24682?
CVE-2022-24682 primarily affects Synacor Zimbra Collaboration Suite. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-24682?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-24682 have an EU (EUVD) identifier?
Yes. CVE-2022-24682 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-29554. It is also flagged as exploited in the EUVD (since 2022-02-25).
When was CVE-2022-24682 published?
CVE-2022-24682 was published on 2022-02-09 and last updated on 2026-08-07.

References

Affected products (31)

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