CVE-2026-25519

OpenSlides · OpenSlides

OpenSlides, a web-based presentation and assembly system, is affected by a high-severity vulnerability that could impact the management of agendas and elections.

Executive summary

A high-severity vulnerability in OpenSlides could allow an attacker to compromise the integrity of assembly management, including motions and election results.

Vulnerability

The vulnerability in this web-based system could allow an attacker to interfere with the projected agenda, motions, or election processes. With a CVSS score of 8.1, the flaw likely involves unauthorized data modification or administrative access.

Business impact

A successful exploit could undermine the democratic processes of an assembly by manipulating election data or agenda items. This poses a significant risk to the integrity of organizations that rely on OpenSlides for official decision-making and record-keeping.

Remediation

Immediate Action: Update the OpenSlides installation to the latest version provided by the developers to patch the vulnerability.

Proactive Monitoring: Review application audit logs for unauthorized changes to election results or agenda configurations.

Compensating Controls: Use strong authentication mechanisms and ensure the web server is hardened against common web application attacks.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Given the potential impact on organizational governance, it is critical to apply the necessary updates immediately. Organizations should also perform a post-patch audit to ensure no unauthorized changes occurred prior to remediation.