CVE-2026-39400: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jhuckaby Cronicle
Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, a non-admin user with create_events and run_events privileges can inject arbitrary JavaScript through job output fields (html.content, html.title, table.header, table.rows, table.caption). The server stores this data without sanitization, and the client renders it via innerHTML on the Job Details page. This vulnerability is fixed in 0.9.111.
AI Analysis
Technical Summary
Cronicle, a multi-server task scheduler with a web UI, prior to version 0.9.111, improperly neutralizes input during web page generation. Specifically, non-admin users with certain privileges can inject arbitrary JavaScript via job output fields such as html.content, html.title, table.header, table.rows, and table.caption. The server stores these inputs without sanitization, and the client renders them using innerHTML on the Job Details page, enabling cross-site scripting attacks. This vulnerability is identified as CWE-79 and has a CVSS 4.0 base score of 5.3. The vulnerability is resolved in version 0.9.111.
Potential Impact
Successful exploitation allows non-admin users with create_events and run_events privileges to execute arbitrary JavaScript in the context of the Cronicle web UI. This could lead to session hijacking, unauthorized actions within the UI, or other client-side impacts typical of XSS vulnerabilities. The vulnerability affects versions prior to 0.9.111. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Cronicle to version 0.9.111 or later, where this vulnerability is fixed. Since the vulnerability is resolved in this version, applying this update is the recommended remediation. No additional vendor advisory or patch links are provided, but the version upgrade is the definitive fix.
CVE-2026-39400: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jhuckaby Cronicle
Description
Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, a non-admin user with create_events and run_events privileges can inject arbitrary JavaScript through job output fields (html.content, html.title, table.header, table.rows, table.caption). The server stores this data without sanitization, and the client renders it via innerHTML on the Job Details page. This vulnerability is fixed in 0.9.111.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/jhuckaby/CronicleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Cronicle, a multi-server task scheduler with a web UI, prior to version 0.9.111, improperly neutralizes input during web page generation. Specifically, non-admin users with certain privileges can inject arbitrary JavaScript via job output fields such as html.content, html.title, table.header, table.rows, and table.caption. The server stores these inputs without sanitization, and the client renders them using innerHTML on the Job Details page, enabling cross-site scripting attacks. This vulnerability is identified as CWE-79 and has a CVSS 4.0 base score of 5.3. The vulnerability is resolved in version 0.9.111.
Potential Impact
Successful exploitation allows non-admin users with create_events and run_events privileges to execute arbitrary JavaScript in the context of the Cronicle web UI. This could lead to session hijacking, unauthorized actions within the UI, or other client-side impacts typical of XSS vulnerabilities. The vulnerability affects versions prior to 0.9.111. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Cronicle to version 0.9.111 or later, where this vulnerability is fixed. Since the vulnerability is resolved in this version, applying this update is the recommended remediation. No additional vendor advisory or patch links are provided, but the version upgrade is the definitive fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-06T22:06:40.516Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5698eaaed68159a5d8df8
Added to database: 04/07/2026, 20:31:10 UTC
Last enriched: 04/16/2026, 11:18:22 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 121
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