6.1
CVSSv3

CVE-2021-34807

Published: 02/07/2021 Updated: 08/07/2021
CVSS v2 Base Score: 5.8 | Impact Score: 4.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 6.1 | Impact Score: 2.7 | Exploitability Score: 2.8
VMScore: 516
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Vulnerability Summary

An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite up to and including 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).

Vulnerability Trend

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zimbra collaboration

zimbra collaboration 8.8.15

zimbra collaboration 9.0.0