CVE-2025-70039: 
Homebrew vulnerability analysis and mitigation

CVE-2025-70039 is an OS Command Injection vulnerability (CWE-78) discovered in linagora Twake v2023.Q1.1223, an open-source collaboration platform. The vulnerability allows unauthenticated remote attackers to inject and execute arbitrary operating system commands through improperly sanitized input. It was published on March 9, 2026, and affects only the specific release v2023.Q1.1223 of the now-deprecated Twake repository. The CVSS v3.1 base score is 9.8 (Critical) (Feedly, GitHub Gist).

The root cause is classified as CWE-78 (Improper Neutralization of Special Elements used in an OS Command), meaning user-supplied input is passed to OS-level command execution functions without adequate sanitization or escaping. The vulnerability is network-accessible, requires no authentication, no privileges, and no user interaction, making it trivially exploitable by any remote attacker. A public disclosure gist was created by researcher 'zcxlighthouse' on March 9, 2026, documenting the CVE details, though specific vulnerable endpoints or payload examples were not included in the public disclosure (GitHub Gist, Feedly). The affected Twake repository (v2023.Q1.1223) has since been officially deprecated by Linagora in favor of the Twake-workplace project (Twake GitHub).

Successful exploitation grants an unauthenticated attacker the ability to execute arbitrary OS commands on the affected server, resulting in complete system compromise across all three security dimensions: confidentiality (unauthorized access to sensitive collaboration data, credentials, and files), integrity (modification or deletion of critical system and application files), and availability (service disruption or denial of service). Given that Twake is a collaboration platform handling team chat, file storage, calendars, and documents, a compromise could expose significant organizational data and enable lateral movement within the hosting environment (Feedly).

As of the time of disclosure, there is no confirmed public proof-of-concept exploit code and no evidence of active in-the-wild exploitation. A GitHub Gist documenting the CVE was published by researcher 'zcxlighthouse' on March 9, 2026, but it contains only a description without a working exploit (GitHub Gist). The EPSS score is 0.000170 (approximately 0.017%), indicating a currently low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, and no threat actor attribution has been reported (Feedly).

No official patch has been released by Linagora for the affected version (v2023.Q1.1223), and the Twake repository has been officially deprecated. Organizations should migrate to the actively maintained Twake-workplace project as the primary remediation step. In the interim, administrators should restrict or isolate network access to affected Twake instances, implement network segmentation, and monitor system logs for anomalous command execution patterns. If Twake cannot be immediately decommissioned, consider placing it behind a WAF or application-layer firewall to filter potentially malicious input (Feedly, Twake GitHub).