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CVE-2026-89042— passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification

Quick assessment

Affected
krakenjs passport-saml-encrypted
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.

库版本 0.1.13 及之前版本中，SAML 签名验证依赖于一个可选的 选项，这使得攻击者可以通过提交未经签名的 SAML 响应来绕过身份验证。攻击者可以向断言消费端点（assertion consumer service endpoint）提交伪造的 SAML 响应（包含任意的 和属性），从而在没有有效签名的情况下获取已认证的档案信息。

CVSS 9.1 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-89042

Vulnerability Information
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Vulnerability Title
passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification
Source: CVE Program / CVE List V5
Vulnerability Description
passport-saml-encrypted through 0.1.13 makes SAML signature verification conditional on an optional cert option, allowing attackers to bypass authentication by submitting unsigned SAML responses. Attackers can post forged SAML responses with arbitrary NameID and attributes to the assertion consumer service endpoint to receive authenticated profiles without valid signatures.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
krakenjs passport-saml-encrypted 0 ~ 0.1.13 -

II. Public POCs for CVE-2026-89042

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III. Intelligence Information for CVE-2026-89042

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Patches & Fixes for CVE-2026-89042 (1)

Vendor Advisories for CVE-2026-89042 (1)

Proof of Concept for CVE-2026-89042 (1)

Security Blog Posts for CVE-2026-89042 (1)

Vendor Pages for CVE-2026-89042 (1)

IV. Related Vulnerabilities

Same product: passport-saml-encrypted
Same vendor: krakenjs
Same weakness: CWE-347

V. Comments for CVE-2026-89042

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