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.
History

Mon, 04 May 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 04 May 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Arelle
Arelle arelle
Vendors & Products Arelle
Arelle arelle

Mon, 04 May 2026 17:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Arelle < 2.39.10 Unauthenticated RCE via /rest/configure
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-04T20:21:36.238Z

Reserved: 2026-04-29T20:58:22.764Z

Link: CVE-2026-42796

cve-icon Vulnrichment

Updated: 2026-05-04T20:21:32.628Z

cve-icon NVD

Status : Received

Published: 2026-05-04T18:16:32.520

Modified: 2026-05-04T18:16:32.520

Link: CVE-2026-42796

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-04T19:43:52Z