# CVE-2018-6882

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.

- Page: https://www.vulneraibility.com/cve/CVE-2018-6882
- CVSS: 6.1
- Known exploited: yes, in CISA KEV since 2022-04-19; CISA due date 2022-05-10; known ransomware use
- EPSS: 29.76% (percentile 98.2)
- Detection templates only, no public exploit found: 1 Nuclei template
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2026-08-13)
- Weakness: CWE-79
- Published: 2018-03-27

## Affected

- synacor:zimbra_collaboration_suite

## References

- [other] http://seclists.org/fulldisclosure/2018/Mar/52
- [other] https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html
- [other] https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7
- [other] https://bugzilla.zimbra.com/show_bug.cgi?id=108786
- [other] http://www.securityfocus.com/archive/1/541891/100/0/threaded
- [other] https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.