CVE-2026-58255 Cronicle is a multi-server task scheduler and runner, with a web based front-end UI.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-58255?
CVE-2026-58255 is a high-severity vulnerability in jhuckaby Cronicle, published on 27 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-58255?
How do I fix CVE-2026-58255?
No fix has been published for CVE-2026-58255 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-58255 being exploited?
There is no known exploitation of CVE-2026-58255 in the wild and no public exploit code.
Sources
Also known as GHSA-9xpg-9w3g-mpwj.