Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

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

Quick assessment

Affected
goauthentik authentik
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

authentik是authentik开源的一个身份提供应用程序。 authentik 2025.12.5之前版本和2026.2.3之前版本存在数据伪造问题漏洞，该漏洞源于SAML源响应处理器未验证断言上的Conditions元素，可能导致重放过期断言和接受针对其他服务提供商的断言。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship

Affected Version Matrix 2

VendorProduct Version RangeStatus
goauthentik authentik < 2025.12.5 affected
< 2026.2.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-41577

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
authentik: SAML source does not validate Conditions, timing, or audience on assertions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
authentik 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
authentik是authentik开源的一个身份提供应用程序。 authentik 2025.12.5之前版本和2026.2.3之前版本存在数据伪造问题漏洞，该漏洞源于SAML源响应处理器未验证断言上的Conditions元素，可能导致重放过期断言和接受针对其他服务提供商的断言。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
goauthentik authentik < 2025.12.5 -

II. Public POCs for CVE-2026-41577

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41577

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-41577 (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-2026-41569 authentik: WS-Federation wreply origin bypass can exfiltrate signed login responses to att

IV. Related Vulnerabilities

Same product: authentik
Same vendor: goauthentik
Same weakness: CWE-345

V. Comments for CVE-2026-41577

No comments yet

Leave a comment