cvedb.io
CVE-2021-34807
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2021-07-02T19:15:08.330 · Last modified 2026-06-17T03:56:36.347

Summary

An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 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).

Affected products

zimbra — collaboration

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.