---
id: CVE-2026-85076
title: >-
  Cronicle: Privilege Escalation via Arbitrary Environment Variable Injection
  through Event Params (Incomplete Fix for CVE-2026-39401)
summary: >-
  Cronicle is a multi-server task scheduler and runner, with a web based
  front-end UI. Prior to 0.9.124, an authenticated non-admin with run_events,
  create_events, or edit_events privilege can supply undeclared keys in event
  params through…
severity: critical
cvss: 9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cvssSource: cna
cwe:
  - CWE-863
  - CWE-74
vendor: jhuckaby
product: Cronicle
affected:
  - Cronicle < 0.9.124
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:28:01.881Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-85076'
references:
  - url: >-
      https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-9w42-v8cj-68gq
    label: >-
      https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-9w42-v8cj-68gq
  - url: >-
      https://github.com/jhuckaby/Cronicle/commit/da0228fdea9bc57c09876c00ea0feda70a0ef110
    label: >-
      https://github.com/jhuckaby/Cronicle/commit/da0228fdea9bc57c09876c00ea0feda70a0ef110
  - url: 'https://github.com/jhuckaby/Cronicle/releases/tag/v0.9.124'
    label: 'https://github.com/jhuckaby/Cronicle/releases/tag/v0.9.124'
tags:
  - cve.org
ingestedAt: '2026-11-05T22:38:31.792Z'
epss: 0.004
epssPercentile: 0.34465
---

## Overview

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.124, an authenticated non-admin with run_events, create_events, or edit_events privilege can supply undeclared keys in event params through api_create_event, api_update_event, or api_run_event. lib/api.js and lib/api/event.js validate the parameter object without restricting its keys, and lib/job.js uppercases those keys and applies them to the child process environment after administrator-defined plugin variables. A key that collides with a security-sensitive environment variable can therefore override the plugin execution context and may cause privilege escalation, arbitrary code execution, data access, or service disruption depending on the plugin and runtime. This issue is fixed in version 0.9.124.

## Affected

- `Cronicle < 0.9.124`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.