{"id":"CVE-2022-24682","aliases":["EUVD-2022-29554","GHSA-fh88-2p7h-7g9h"],"status":"published","title":"An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15...","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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.30931,"percentile":0.98271,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-116","CWE-79"],"published":"2022-02-09T03:19:04Z","modified":"2026-10-28T10:28:04Z","kev":{"date_added":"2022-02-25","due_date":"2022-03-11","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2022-02-25"},{"source":"kev","since":"2022-02-25"}],"exploits":[{"source":"nuclei","id":"CVE-2022-24682","title":"Zimbra Collaboration Suite \u003c 8.8.15 - Improper Encoding","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-24682.yaml"}],"products":[{"vendor":"synacor","product":"zimbra collaborate suite (zcs)"},{"vendor":"synacor","product":"zimbra_collaboration_suite"}],"references":[{"url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","web"]},{"url":"https://wiki.zimbra.com/wiki/Security_Center","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","web"]},{"url":"https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","article"]},{"url":"https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","article"]},{"url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","web"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-24682","tags":["government-resource","US Government Resource","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-24682","tags":["advisory"]},{"url":"https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15"},{"url":"https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra"},{"url":"https://github.com/advisories/GHSA-fh88-2p7h-7g9h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24682.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2022-24682","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.","status":"published","published":"2022-02-09T03:19:04Z","modified":"2026-08-07T03:55:20.799Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:34:34.940806Z"}],"euvd":[{"id":"EUVD-2022-29554","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.","status":"published","published":"2022-02-09T03:19:04Z","modified":"2026-08-07T03:55:20Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"exploited_since":"2022-02-25","updated_at":"2026-11-02T18:02:07.757838Z"}],"ghsa":[{"id":"GHSA-fh88-2p7h-7g9h","title":"An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15...","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.","status":"published","published":"2022-02-10T00:00:32Z","modified":"2025-10-22T00:32:29Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79","CWE-116"],"updated_at":"2026-11-02T15:04:05.344883Z"}],"kev":[{"id":"CVE-2022-24682","title":"Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability","description":"Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability in the Calendar feature that allows an attacker to execute arbitrary code.","cwes":["CWE-79","CWE-116"],"kev":{"date_added":"2022-02-25","due_date":"2022-03-11","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2022-24682","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.","status":"published","published":"2022-02-09T04:15:07.4Z","modified":"2026-08-07T05:16:55.74Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:07:11.52734Z"}],"osv":[{"id":"CVE-2022-24682","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.","status":"published","published":"2022-02-09T03:19:04Z","modified":"2026-10-28T10:28:04.584589481Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:24.428403Z"}]}}