Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/jhuckaby/Cronicle/commit/f3d3550d0f3fe89bab52d3788f0db1dd1086
- https://github.com/jhuckaby/Cronicle/releases/tag/v0.9.121
- https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-9xpg-9w3g-mpwj
FAQ
What is CVE-2026-58255?
CVE-2026-58255 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 i...
How severe is CVE-2026-58255?
CVE-2026-58255 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-58255?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.