CVE-2026-42796 — Arelle < 2.39.10 Unauthenticated RCE via /rest/configure
Arelle before 2.39.10 contains an unauthenticated remote code execution vulnerability in the /rest/configure REST endpoint that accepts a plugins query parameter and forwards it…
Published: 2026-05-04 · CVSS: 9.2 · CVSS 4.0
Arelle before 2.39.10 contains an unauthenticated remote code execution vulnerability in the /rest/configure REST endpoint that accepts a plugins query parameter and forwards it to the plugin manager without authentication or authorization. Attackers can supply a URL to a malicious Python file through the plugins parameter, causing the Arelle webserver to download and execute the attacker-controlled code within the Arelle process with its privileges.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7