krakenjs passport-saml-encrypted up to 0.1.13 SAML Signature Verification signature verification

Summaryinfo

A vulnerability described as critical has been identified in krakenjs passport-saml-encrypted up to 0.1.13. Impacted is an unknown function of the component SAML Signature Verification. Such manipulation leads to signature verification. This vulnerability is documented as CVE-2026-89042. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in krakenjs passport-saml-encrypted up to 0.1.13. Affected by this issue is an unknown code block of the component SAML Signature Verification. The manipulation with an unknown input leads to a signature verification vulnerability. Using CWE to declare the problem leads to CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-89042 since 09/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• krakenjs

Name

• passport-saml-encrypted

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4
• 0.1.5
• 0.1.6
• 0.1.7
• 0.1.8
• 0.1.9
• 0.1.10
• 0.1.11
• 0.1.12
• 0.1.13

Website

• Product: https://github.com/krakenjs/passport-saml-encrypted/

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