CVE-2026-41569— authentik: WS-Federation wreply origin bypass can exfiltrate signed login responses to attacker-controlled endpoints
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-41569
Vulnerability Information
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Vulnerability Title
authentik: WS-Federation wreply origin bypass can exfiltrate signed login responses to attacker-controlled endpoints
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 that passes the check (e.g. https://portal.example.com.evil.tld/), causing the victim's browser to POST the signed WS-Federation login response to attacker-controlled infrastructure. This issue has been patched in version 2026.2.3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| goauthentik | authentik | < 2026.2.3 | - |
II. Public POCs for CVE-2026-41569
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-41569 (1)
Same Patch Batch · goauthentik · 2026-06-02 · 6 CVEs total
| CVE-2026-49448 | 9.8 CRITICAL | authentik: SourceStage bypass via empty POST |
| CVE-2026-42849 | 9.3 CRITICAL | authentik: Reflected XSS in SFE AutosubmitStage allows IDP account takeover |
| CVE-2026-49443 | 8.8 HIGH | authentik: `UserSourceConnection.user` and `GroupSourceConnection.group` are changeable th |
| CVE-2026-47201 | 8.5 HIGH | authentik: XML Signature Wrapping in SAML Source ACS allows authentication as arbitrary fe |
| CVE-2026-41577 | authentik: SAML source does not validate Conditions, timing, or audience on assertions |
IV. Related Vulnerabilities
Same product: authentik
- CVE-2026-49448
authentik: SourceStage bypass via empty POST - CVE-2026-49443
authentik: `UserSourceConnection.user` and `GroupSourceConne - CVE-2026-47201
authentik: XML Signature Wrapping in SAML Source ACS allows - CVE-2026-42849
authentik: Reflected XSS in SFE AutosubmitStage allows IDP a - CVE-2026-41577
authentik: SAML source does not validate Conditions, timing,
Same vendor: goauthentik
- CVE-2026-49448
authentik: SourceStage bypass via empty POST - CVE-2026-49443
authentik: `UserSourceConnection.user` and `GroupSourceConne - CVE-2026-47201
authentik: XML Signature Wrapping in SAML Source ACS allows - CVE-2026-42849
authentik: Reflected XSS in SFE AutosubmitStage allows IDP a - CVE-2026-41577
authentik: SAML source does not validate Conditions, timing,
Same weakness: CWE-601
- CVE-2026-40181
React Router's same-origin redirect with path starting // ca - CVE-2026-45278
Nextcloud: Open Redirect in user_oidc login flow via protoco - CVE-2026-40961
Apache Airflow: Open Redirect Bypass Vulnerability - CVE-2026-49380
JetBrains TeamCity 输入验证错误漏洞 - CVE-2026-45307
Speakr: Open redirect in is_safe_url via parser mismatch on
V. Comments for CVE-2026-41569
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