Medium
5.3
Zimbra is vulnerable to stored cross-site scripting (XSS) via the Content-Location MIME header in...
CVE-2026-66911
First seen on SecPulse
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Synacor | Zimbra Collaboration |
< 10.1.21 |
10.1.21 |
Original description The description as published by the source.
Zimbra is vulnerable to stored cross-site scripting (XSS) via the Content-Location MIME header in email attachments. Due to lack of sanitization of the Content-Location header, an attacker can set it to a javascript: URI. An unauthenticated remote attacker can send a crafted email to a victim; when the victim opens the email in the Zimbra web interface and clicks the attachment name, the JavaScript payload executes in the victim's browser context. This issue was fixed in version 10.1.21
Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory
References
- web cert.pl
- web wiki.zimbra.com
- web nvd.nist.gov
- web github.com