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CVE-2025-12489: evernote-mcp-server openBrowser Command Injection Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-06 · updated 2026-10-19
• Weakness: CWE-78

Description

evernote-mcp-server openBrowser Command Injection Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of evernote-mcp-server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the openBrowser function. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-27913.

Affected products

• evernote-mcp-server: 2.1.0

References

• https://github.com/brentmid/evernote-mcp-server/commit/1e66c78c4ce6ea294ac6b0eb289a9eae9c5e9579
• https://www.zerodayinitiative.com/advisories/ZDI-25-983/

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