Threats affecting pkg:github/jhuckaby/Cronicle

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.121, a non-administrator user or scoped API key with `create_events` and `run_events` privileges can inject top-level `uid` and `gid` fields through `/api/app/create_event` or `/api/app/update_event`. In `lib/api.js`, `requireValidEventData` uses `validateOptionalParams` as a partial allow-list that silently passes unknown keys, storing the injected fields verbatim. In `lib/job.js`, `launchJob` copies the whole event into the job, and a plugin `uid` overrides the event `uid` only when the plugin defines one. The default `shellplug` and `urlplug` plugins do not define a `uid`, so the event-controlled identity survives into child-process launch. On a root-daemon installation, this lets a low-privileged user run jobs as arbitrary users, including root, bypassing the otherwise administrator-only run-as-user control. This API-side event injection is distinct from the job-output `uid`/`gid` injection addressed by CVE-2026-39401. This issue is fixed in version 0.9.121.

CVE-2026-55562 is a critical cross-site scripting (XSS) vulnerability in jhuckaby Cronicle versions prior to 0.9.119. The flaw exists in the administrator Activity Log where attacker-controlled user full names are inserted into HTML without proper encoding. This allows an authenticated non-administrator or an anonymous attacker (if free_accounts is enabled) to inject malicious scripts that execute in an administrator's session, potentially leading to administrator takeover and command execution. The issue is fixed in version 0.9.119.

CVE-2026-39401 is a medium severity vulnerability in jhuckaby Cronicle versions prior to 0.9.111. It involves missing authorization checks when jb child processes include an update_event key in their JSON output. This allows a low-privilege user who can create and run events to modify any event property, such as webhook URLs and notification emails. The vulnerability is fixed in version 0.9.111.

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.