CVE-2026-89042
passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-347 |
| Vendor | krakenjs |
| Product | passport-saml-encrypted |
| Published | Sep 10, 2026 |
| Last Updated | Sep 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
krakenjs / passport-saml-encrypted
0 ≤ 0.1.13
References
github.com: https://github.com/krakenjs/passport-saml-encrypted/issues/29 github.com: https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L296 github.com: https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L321 github.com: https://github.com/krakenjs/passport-saml-encrypted vulncheck.com: https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-authentication-bypass-via-missing-signature-verification
Credits
Yu Bao, PayPal Cyber Security Team