---
id: CVE-2018-6882
title: >-
  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 HTM…
summary: >-
  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 HTM…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
  - CWE-79
vendor: synacor
product: zimbra_collaboration_suite
affected:
  - zimbra_collaboration_suite < 8.7.0
  - zimbra_collaboration_suite = 8.7.0
  - zimbra_collaboration_suite = 8.8.0
  - zimbra_collaboration_suite = 8.8.1
  - zimbra_collaboration_suite = 8.8.2
  - zimbra_collaboration_suite = 8.8.3
  - zimbra_collaboration_suite = 8.8.4
  - zimbra_collaboration_suite = 8.8.5
  - zimbra_collaboration_suite = 8.8.6
patched:
  - zimbra_collaboration_suite 8.7.0
published: '2018-03-27'
updated: '2026-08-13'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-6882'
references:
  - url: 'http://seclists.org/fulldisclosure/2018/Mar/52'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/archive/1/541891/100/0/threaded'
    label: cve@mitre.org
  - url: 'https://bugzilla.zimbra.com/show_bug.cgi?id=108786'
    label: cve@mitre.org
  - url: 'https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7'
    label: cve@mitre.org
  - url: 'https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories'
    label: cve@mitre.org
  - url: >-
      https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html
    label: cve@mitre.org
  - url: 'http://seclists.org/fulldisclosure/2018/Mar/52'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securityfocus.com/archive/1/541891/100/0/threaded'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.zimbra.com/show_bug.cgi?id=108786'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.25268
epssPercentile: 0.97891
kev: true
kevDateAdded: '2022-04-19'
kevDueDate: '2022-05-10'
kevRansomware: true
exploited: true
ingestedAt: '2026-08-13T06:00:54.224Z'
exploits:
  nuclei:
    - CVE-2018-6882
  checkedAt: '2026-09-21T15:23:38.342Z'
exploitAvailable: true
---

## Overview

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.

## Affected

- `zimbra_collaboration_suite < 8.7.0`
- `zimbra_collaboration_suite = 8.7.0`
- `zimbra_collaboration_suite = 8.8.0`
- `zimbra_collaboration_suite = 8.8.1`
- `zimbra_collaboration_suite = 8.8.2`
- `zimbra_collaboration_suite = 8.8.3`
- `zimbra_collaboration_suite = 8.8.4`
- `zimbra_collaboration_suite = 8.8.5`
- `zimbra_collaboration_suite = 8.8.6`

## Remediation

Upgrade past the affected range:

- `zimbra_collaboration_suite 8.7.0`