CVE-2025-67809
MediumCVSS 4.7Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
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. Because these credentials are embedded directly, any unauthorized party could retrieve them and misuse the Flickr integration. An attacker with access could impersonate the legitimate application and initiate valid Flickr OAuth flows; if a user approves such a request, the attacker could gain access to the user's Flickr data. The hardcoded credentials have been removed and the key revoked.
Risk Assessment
Risk includes unauthorized access to users' Flickr data, potentially leading to privacy breaches and personal data theft.
Recommendation
Update Zimbra Collaboration to a version where the hardcoded credentials are removed. Ensure the Flickr key is revoked and no longer in use.
Other vulnerabilities in Zimbra Collaboration
See all- CVE-2016-4019High
Unspecified vulnerability in Zimbra Collaboration before version 8.7.0 allows remote attackers to affect integrity via unknown vectors.
- CVE-2016-3413High
Unspecified vulnerability in Zimbra Collaboration before 8.7.0 allows remote attackers to affect integrity via unknown vectors.
- CVE-2016-3406High
Multiple cross-site request forgery (CSRF) vulnerabilities in Zimbra Collaboration before version 8.7.0 allow remote attackers to hijack the authentication of unspecified victims via vectors involving the Client uploader extension or extension REST handlers.
- CVE-2016-3405High
Multiple unspecified vulnerabilities in Zimbra Collaboration before version 8.7.0 allow remote attackers to affect integrity.
- CVE-2016-3404High
Unspecified vulnerability in Zimbra Collaboration before 8.7.0 allows remote attackers to affect integrity via unknown vectors.
- CVE-2016-3402High
Unspecified vulnerability in Zimbra Collaboration before version 8.7.0 allows remote attackers to affect confidentiality via unknown vectors.
- CVE-2026-73570HighActively exploited
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
- CVE-2025-68645HighActively exploited
A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 due to improper handling of user-supplied request parameters in the RestFilter servlet. An unauthenticated remote attacker can craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.
- CVE-2025-48700MediumActively exploited
A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session. It arises from insufficient sanitization of HTML content, including crafted tag structures and attribute values with an @import directive. The vulnerability triggers when a user views a crafted email in the Classic UI, requiring no additional interaction.
- CVE-2025-27915MediumActively exploited
An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a <details> tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS