CVE-2026-89042

critical · 9.3

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.

9.3

CVSS

0.4%

EPSS (exploit prob.)

32nd

EPSS percentile

2026-09-10

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-347

References

https://github.com/krakenjs/passport-saml-encrypted
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L296
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L321
https://github.com/krakenjs/passport-saml-encrypted/issues/29
https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-authentication-bypass-via-missing-signature-verification

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-89042