← Vulnerability feed

Vulnerability record · CVE-2026-41577 · published 2 June 2026

CVE-2026-41577: Goauthentik authentik insufficient verification of data authenticity vulnerability

Goauthentik · Authentik

authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, the SAML source response processor (ResponseProcessor.parse()) does not validate the Conditions element on assertions. NotBefore, NotOnOrAfter, and AudienceRestriction are all ignored. This allows replay of expired assertions and acceptance of assertions intended for other service providers. This issue has been patched in versions 2025.12.5 and 2026.2.3.

6.9 CVSS 4.0 Medium EPSS 0.19% · top 91.7% CWE-345 · Insufficient verification of data authenticity
6.9CVSS 4.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, the SAML source response processor (ResponseProcessor.parse()) does not validate the Conditions element on assertions. NotBefore, NotOnOrAfter, and AudienceRestriction are all ignored. This allows replay of expired assertions and acceptance of assertions intended for other service providers. This issue has been patched in versions 2025.12.5 and 2026.2.3.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/goauthentik/authentik/security/advisories/GHSA-4v4x-x5pr-8gp2 Vendor Advisory

Track CVE-2026-41577 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-49448Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, the Source stage can be bypassed by sending an em…EPSS 0.58%9.8CVE-2024-38371Goauthentik authentik improper access control vulnerabilityauthentik is an open-source Identity Provider. Access restrictions assigned to an application were not checked when using the OAuth2 Device code flow…EPSS 0.59%9.8CVE-2023-48228Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source identity provider. When initialising a oauth2 flow with a `code_challenge` and `code_method` (thus requesting PKCE), the …EPSS 1.2%9.8CVE-2023-46249Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source Identity Provider. Prior to versions 2023.8.4 and 2023.10.2, when the default admin user has been deleted, it is potentia…EPSS 0.65%9.8CVE-2022-46145Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source identity provider. Versions prior to 2022.11.2 and 2022.10.2 are vulnerable to unauthorized user creation and potential a…EPSS 1.3%9.3CVE-2026-42849Goauthentik authentik cross-site scripting vulnerabilityauthentik 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 …EPSS 0.47%9.0CVE-2024-47070Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source identity provider. A vulnerability that exists in versions prior to 2024.8.3 and 2024.6.5 allows bypassing password login…EPSS 0.57%8.8CVE-2026-49443Goauthentik authentik improper authentication vulnerabilityauthentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, an attacker with the ability to change a source c…EPSS 0.44%

Source: NIST National Vulnerability Database (record CVE-2026-41577), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.