Vulnerability details

CVE-2026-85076

jhuckaby Cronicle

Cronicle: Privilege Escalation via Arbitrary Environment Variable Injection through Event Params (Incomplete Fix for CVE-2026-39401)

CVSS 4.0
9.0Critical

Official description

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.

CVSS scores

ScoreVersionSourceVector
9.0Critical 4.0 CVEProject cvelistV5 (CNA) (GitHub_M) 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

Affected products

VendorProductVersionsSource
jhuckaby Cronicle < 0.9.124 CVEProject cvelistV5 (CNA)

References and advisories

3
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Details

Published
2026-11-05
Last updated
2026-11-09
State
Published
Assigner (CNA)
GitHub_M
Kolun priority
22 · Low

Exploit prediction (EPSS)

0.4%
Probability of exploitation in 30 days
34.5%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-863
    Incorrect Authorization
  • CWE-74
    Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')