Is CVE-2026-40869 actively exploited?

No active exploitation of CVE-2026-40869 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40869 be exploited remotely?

Yes. CVE-2026-40869 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40869?

CVE-2026-40869 has a CVSS score of 6.5 (MEDIUM).

HOME VULNERABILITIESCVE-2026-40869

MEDIUM

CVE-2026-40869

CWE-266Published: April 21, 2026· Updated: Apr 23, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.0th

Official Description

Decidim is a participatory democracy framework. Starting in version 0.19.0 and prior to versions 0.30.5 and 0.31.1, a vulnerability allows any registered and authenticated user to accept or reject any amendments. The impact is on any users who have created proposals where the amendments feature is enabled. This also elevates the user accepting the amendment as the author of the original proposal as people amending proposals are provided coauthorship on the coauthorable resources. Versions 0.30.5 and 0.31.1 fix the issue. As a workaround, disable amendment reactions for the amendable component (e.g. proposals).

NVD Source

Technical Analysis

CVE-2026-40869 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.