Vulnerability · Published Sep 10, 2026 · Assigned by VulnCheck

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

Critical 9.1

In plain English

A critical-severity security flaw in passport-saml-encrypted from krakenjs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.4%top 67.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
krakenjs	passport-saml-encrypted	0 – through 0.1.13

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Reporter advisory: authentication bypass when cert is not configured issue-tracking
Signature check gated on options.cert at v0.1.13 technical-description
Same gate on the decrypted-assertion path at v0.1.13 technical-description
krakenjs/passport-saml-encrypted product
VulnCheck Advisory: passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification third-party-advisory