CVE-2018-6882
medium CISA KEVSynacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Vendor / product: Synacor — Zimbra Collaboration Suite (ZCS)
Cross-site scripting (XSS) vulnerability in the ZmMailMsgView.getAttachmentLinkHtml function in Zimbra Collaboration Suite (ZCS) before 8.7 Patch 1 and 8.8.x before 8.8.7 might allow remote attackers to inject arbitrary web script or HTML via a Content-Location header in an email attachment.
CVSS
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2018-03-27 16:29
Modified: 2026-10-01 20:17
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2022-04-19 · due 2022-05-10
Known ransomware use: Known
Required action (CISA)
Apply updates per vendor instructions.
Affected products
synacor / zimbra_collaboration_suite <8.7.0, 8.7.0, 8.8.0, 8.8.1, 8.8.2, 8.8.3
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Vendor advisory: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
References
- http://seclists.org/fulldisclosure/2018/Mar/52 cve@mitre.org
- http://www.securityfocus.com/archive/1/541891/100/0/threaded cve@mitre.org
- https://bugzilla.zimbra.com/show_bug.cgi?id=108786 cve@mitre.org
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7 cve@mitre.org
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories cve@mitre.org
- https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-... cve@mitre.org
- http://seclists.org/fulldisclosure/2018/Mar/52 af854a3a-2127-422b-91ae-364da2661108
- http://www.securityfocus.com/archive/1/541891/100/0/threaded af854a3a-2127-422b-91ae-364da2661108
- https://bugzilla.zimbra.com/show_bug.cgi?id=108786 af854a3a-2127-422b-91ae-364da2661108
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7 af854a3a-2127-422b-91ae-364da2661108
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories af854a3a-2127-422b-91ae-364da2661108
- https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-... af854a3a-2127-422b-91ae-364da2661108
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗