CVE-2018-6882

synacor zimbra collaboration suite

Published 27 Mar 2018 · updated 1 Oct 2026 · Analyzed

6.1 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 19 Apr 2022, with a remediation deadline of 10 May 2022 for US federal agencies. It has been used in ransomware campaigns.

Required action: Apply updates per vendor instructions.

Description

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.

References

seclists.org/fulldisclosure/2018/Mar/52 · Mailing List, Third Party Advisory
www.securityfocus.com/archive/1/541891/100/0/threaded · Broken Link, Third Party Advisory, VDB Entry
bugzilla.zimbra.com/show_bug.cgi?id=108786 · Broken Link, Issue Tracking, Permissions Required
wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7 · Permissions Required
wiki.zimbra.com/wiki/Zimbra_Security_Advisories · Vendor Advisory
www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html · Exploit, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882 · US Government Resource