MEDIUMCVSS v4 5.3Vulnerability
CVE-2026-66911
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
Properties
- Cvss score
- 5.3
- First seen
- 2026-10-29T18:31:06+00:00
- Last seen
- 2026-10-29T18:31:06+00:00
- Euvd assigner
- CERT-PL
- Retrieved at
- 2026-10-29T19:54:43+00:00
- Src batch id
- euvd-20261029T193401Z-a7e82d
- Source url
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112941
- Score
- 5.3
- Euvd base score version
- 4.0
- Fetched at
- 2026-10-29T19:34:21+00:00
- Euvd vendor
- Synacor
- Cvss vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- First seen by Signal
- 2026-10-29T19:34:21+00:00
- Euvd base score
- 5.3
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Content hash
- 98c8313d2aa697e1ed0406e05fb3181e3a50f69f7c2ba69ceb2f48eee87da6b9
- Published at
- 2026-10-29T16:18:15.390
- Last modified
- 2026-10-29T16:29:56.553
- Euvd updated
- 2026-10-29T18:31:06+00:00
- Euvd epss pct
- 0
Related Entities (1)
HAS_WEAKNESS (1)
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