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Response snapshot Oct 28, 2026, 00:31 UTC

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VulnerabilityCVE-2026-58255

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI.

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.

At a glance

Exploited
Not known
Severity
8.8 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-58255 (opens a new tab)

What happened

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.

Scores and how they were measured

CVSS base severity

8.8

Version 3.1As of

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-58255 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  4. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 27). Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. (CVE-2026-58255). https://kevwire.com/record/CVE-2026-58255

MLA

"Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. (CVE-2026-58255)." KEVWire, 27 Oct. 2026, kevwire.com/record/CVE-2026-58255.

Chicago

KEVWire. "Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. (CVE-2026-58255)." Last modified October 27, 2026. https://kevwire.com/record/CVE-2026-58255.

Evidence summary (plain text)

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. (Oct 27, 2026).
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.
CVSS 8.8 (version 3.1; evidence as of Oct 27, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-58255).
Sources:
NVD CVE-2026-58255: https://nvd.nist.gov/vuln/detail/CVE-2026-58255
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-27T22:55:58.545Z&lastModEndDate=2026-10-28T00:30:58.956Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-27T22:20:57.249Z&lastModEndDate=2026-10-27T23:55:56.538Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-27T21:40:57.633Z&lastModEndDate=2026-10-27T23:20:55.126Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2026-58255.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 28, 2026, 00:30 UTC. Ingestion is not an independent editorial investigation.

NVD status: Received. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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Record details

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