CVE-2026-25227
RCE in authentik via delegated-permission test endpoint
Is CVE-2026-25227 being exploited?
Not confirmed. CVE-2026-25227 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.81% probability of exploitation in the next 30 days.
How severe is CVE-2026-25227?
CVE-2026-25227 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-25227?
Yes. A fix has been recorded for CVE-2026-25227. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25227 affect?
CVE-2026-25227 affects authentik (open-source IDP), versions affected: 2021.3.1–2025.8.5; fixed in 2025.8.6, 2025.10.4, 2025.12.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25227?
Patch to fixed releases (2025.8.6+, 2025.10.4+, 2025.12.4+).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated user with delegated perms can execute code in the authentik container via test endpoint; full server compromise possible.
Immediate action required
- affected>= 2021.3.1 and < 2025.8.6
- affected>= 2025.10.0-rc1 and < 2025.10.4
- affected>= 2025.10.0-rc1 and < 2025.12.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.