Privilege escalation via unrestricted update_event job output
Published Apr 7, 2026 · Updated Apr 7, 2026
Missing authorization in Cronicle before 0.9.111 allows remote authenticated users to alter event configuration via job output. The job-output parser in lib/job.js accepts update_event, and listFindUpdate writes the supplied object directly into the parent event record without an authorization or property check. Users with create_events and run_events privileges can redirect webhooks to disclose job scripts, environment variables, and internal network details or change notifications.
Summary
What happened
Missing authorization in Cronicle before 0.9.111 allows remote authenticated users to alter event configuration via job output. The job-output parser in lib/job.js accepts update_event, and listFindUpdate writes the supplied object directly into the parent event record without an authorization or property check. Users with create_events and run_events privileges can redirect webhooks to disclose job scripts, environment variables, and internal network details or change notifications.
The record
- CVE
- CVE-2026-39401
- Published
- Apr 7, 2026
- Updated
- Apr 7, 2026
- Vendor
- Joseph Huckaby
- Product
- Cronicle
- Classifications
- CWE-862, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 7, 2026CVE publishedPublication date reported by the CVE source.
- Apr 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.9.111
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- update_event job-output reproductionproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo