Dashboard / CVE-2026-42796

CVE-2026-42796

CRITICAL 1 PoC
INFO Priority: 0.25 BB Relevance: 89/100
Published: 2026-05-04 Modified: 2026-11-11 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: Present
VC: High
VI: High
VA: High

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Arelle Arelle 0 < 2.39.10
workiva arelle < 2.39.10

References & Advisories (3)

Proof of Concept (1)

—
https://github.com/ameerhamza-malik/CVE-2026-42796
nomi-sec

Bug Bounty Relevance

89 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

9.2 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

2.75%
Raw Score 0.027470
Percentile 86.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.02747
2026-11-12
0.02747
2026-11-10
0.02747
2026-11-09
0.02747
2026-11-08
0.02747

Intelligence Sources

mitre ref →
nvd ref →

External Links