Improper Privilege Management Affecting goauthentik.io/authentik/core/api package, versions <2025.12.5>=2026.2.0-rc1 <2026.2.3
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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- published29 May 2026
- disclosed22 May 2026
- creditb-hermes, 0x90sh, Snir Aviv
Introduced: 22 May 2026
CVE-2026-40172 Â (opens in a new tab)How to fix?
Upgrade goauthentik.io/authentik/core/api to version 2025.12.5, 2026.2.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management in PATCH /api/v3/core/users/{pk}/. An attacker can gain elevated privileges by assigning arbitrary groups, including those with administrator-equivalent permissions, to users they control or have access to, bypassing intended permission checks.