Description
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A hardcoded Flickr API key and secret are present in the publicly accessible Flickr Zimlet used by Zimbra Collaboration. Because these credentials are embedded directly in the Zimlet, any unauthorized party could retrieve them and misuse the Flickr integration. An attacker with access to the exposed credentials could impersonate the legitimate application and initiate valid Flickr OAuth flows. If a user is tricked into approving such a request, the attacker could gain access to the user s Flickr data. The hardcoded credentials have since been removed from the Zimlet code, and the associated key has been revoked.
Affected products
zimbra: collaboration
References3
- wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
- wiki.zimbra.com/wiki/Security_Center Release Notes
- wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy Product
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 22 · as of 11 November 2026
- CWE
- CWE-798
Could this be exploited in your environment?
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