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Critical severity9.3NVD Advisory· Published Jun 2, 2026· Updated Jun 4, 2026

CVE-2026-42849

CVE-2026-42849

Description

authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, due to the implementation of stages in the SFE (Simple Flow Executor) in order to make the interface more compatible with legacy browsers, it was possible to use an XSS exploit in the AutosubmitStage. This issue has been patched in versions 2025.12.5 and 2026.2.3.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • authentik/authentik2 versions
    cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*range: <2025.12.5
    • (no CPE)range: <2025.12.5, <2026.2.3
  • osv-coords
    pkg:bitnami/authentik
    Range: < 2025.12.5

Patches

Vulnerability mechanics

References

1

News mentions

1