CVE-2026-41569 authentik: WS-Federation wreply origin bypass can exfiltrate signed login responses to attacker-controlled endpoints

authentik is an open-source identity provider. Prior to version 2026.2.3, the WS-Federation provider validates the user-supplied wreply parameter using a raw string prefix check rather than proper URL parsing. An attacker who can craft a login link can supply a wreply value on a different origin...

CVE-2026-41569 authentik: WS-Federation wreply origin bypass can exfiltrate signed login responses to attacker-controlled endpoints

authentik is an open-source identity provider. Prior to version 2026.2.3, the WS-Federation provider validates the user-supplied wreply parameter using a raw string prefix check rather than proper URL parsing. An attacker who can craft a login link can supply a wreply value on a different origin...

CVE-2026-41577

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 expir...

CVE-2026-41577

CVE-2026-41577 affects the open‑source identity provider authentik. The SAML source response processor (ResponseProcessor.parse()) does not validate the Conditions element on assertions prior to versions 2025.12.5 and 2026.2.3. Specifically, NotBefore, NotOnOrAfter, and AudienceRestriction are ig...

CVE-2026-41577 authentik: SAML source does not validate Conditions, timing, or audience on assertions

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 expir...

EUVD-2026-33987

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 expir...

CVE-2026-41577 authentik: SAML source does not validate Conditions, timing, or audience on assertions

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 expir...

CVE-2026-44649

SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to 1.18.0, SillyTavern accepts Remote-User Authelia and X-Authentik-Username Authentik HTTP headers to...

authentik 输入验证错误漏洞

Authentik is an open-source identity provisioning application. Versions of Authentik prior to 2026.2.3 had a vulnerability related to input validation errors. This vulnerability stemmed from the WS-Federation provider’s use of raw string prefixes for validation instead of proper URL parsing, whic...

authentik 授权问题漏洞

Authentik is an open-source identity provisioning application. Versions of Authentik before 2025.12.6, 2026.2.4, and 2026.5.1 have vulnerabilities related to authorization. These vulnerabilities stem from the possibility of sending empty POST requests, which may bypass the authentication phase...

authentik 数据伪造问题漏洞

Authentik is an open-source identity provisioning application developed by Authentik. Versions of Authentik before 2025.12.5 and 2026.2.3 had a data manipulation vulnerability. This vulnerability stemmed from the SAML response processor not verifying the Conditions element in assertions, which...

CVE-2026-49443: Improper Authentication

authentik 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 connection, and an account in one of the configured sources can log into any account. This issue has been patched in versions 2025.12.6, 2026.2.4, an...

CVE-2026-47201: Improper Input Validation

authentik is an open-source identity provider. Prior to versions 2025.12.5, 2026.2.3, and 2026.5.1, authentik's SAML Source ACS endpoint is vulnerable to XML Signature Wrapping when validating upstream SAML responses. An attacker with any account at the upstream IdP can reuse a valid signed...

CVE-2026-41577: Insufficient Verification of Data Authenticity

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 expir...

CVE-2026-42849: Improper Neutralization of Input During Web Page Generation

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 issu...

CVE-2026-41569: URL Redirection to Untrusted Site

authentik is an open-source identity provider. Prior to version 2026.2.3, the WS-Federation provider validates the user-supplied wreply parameter using a raw string prefix check rather than proper URL parsing. An attacker who can craft a login link can supply a wreply value on a different origin...

authentik 跨站脚本漏洞

Authentik is an open-source identity provisioning application. Versions of Authentik before 2025.12.5 and 2026.2.3 had a cross-site scripting vulnerability. This vulnerability stemmed from issues in the SFE implementation phase, which could lead to the exploitation of XSS vulnerabilities during t...

authentik 授权问题漏洞

Authentik is an open-source identity provisioning application. Versions of Authentik prior to 2025.12.6, 2026.2.4, and 2026.5.1 contained vulnerabilities related to authorization. These vulnerabilities stemmed from the possibility for attackers who could modify source connections to exploit...

authentik 输入验证错误漏洞

Authentik is an open-source identity provisioning application developed by Authentik. Versions prior to 2025.12.5, 2026.2.3, and 2026.5.1 contained a vulnerability related to input validation errors. This vulnerability stemmed from an XML signature packaging flaw in the SAML Source ACS endpoint’s...

PT-2026-45854

Name of the Vulnerable Software and Affected Versions authentik versions prior to 2026.2.3 Description The WS-Federation provider in this open-source identity provider validates the user-supplied wreply parameter using a raw string prefix check instead of proper URL parsing. An attacker can craft...