Missing Authentication for Critical Function Affecting oncall package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-ONCALL-18508055
- published2 Aug 2026
- disclosed16 Jul 2026
- creditUnknown
Introduced: 16 Jul 2026
CVE-2026-63087 (opens in a new tab)How to fix?
There is no fixed version for oncall.
Overview
oncall is an Oncall is a calendar tool designed for scheduling and managing on-call shifts
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the plugin install endpoint when sending a POST request with hardcoded default stack_id and org_id values. An attacker can obtain a valid authentication token and gain unauthorized access to internal API endpoints, create arbitrary admin users, revoke legitimate plugin tokens, and redirect API calls to an attacker-controlled host by overwriting organization configuration fields.