Vulnerability-Lookup

CVE-2026-89042 (GCVE-0-2026-89042)

Vulnerability from cvelistv5 – Published: 2026-09-10 17:39 – Updated: 2026-09-11 20:32

Title

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

Summary

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.

Severity

9.3 (Critical)


                        
                          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

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 17:09 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/krakenjs/passport-saml-encrypt…	issue-tracking
https://github.com/krakenjs/passport-saml-encrypt…	technical-description
https://github.com/krakenjs/passport-saml-encrypt…	technical-description
https://github.com/krakenjs/passport-saml-encrypted	product
https://www.vulncheck.com/advisories/passport-sam…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
krakenjs	passport-saml-encrypted	Affected: 0 , ≤ 0.1.13 (semver)	guessed

Date Public

2026-08-11 00:00

Credits

Yu Bao, PayPal Cyber Security Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-89042

Vulnerability from fkie_nvd - Published: 2026-09-10 18:18 - Updated: 2026-09-11 21:17

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

References

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

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/krakenjs/passport-saml-encrypted/issues/29"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-authentication-bypass-via-missing-signature-verification"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-VW3M-3X7W-24G8

Vulnerability from github – Published: 2026-09-10 18:31 – Updated: 2026-09-10 18:31

Details

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

9.3 (Critical)


                  
                    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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89042"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-10T18:18:15Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-vw3m-3x7w-24g8",
  "modified": "2026-09-10T18:31:50Z",
  "published": "2026-09-10T18:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89042"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krakenjs/passport-saml-encrypted/issues/29"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krakenjs/passport-saml-encrypted"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L296"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L321"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-authentication-bypass-via-missing-signature-verification"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-89042 (GCVE-0-2026-89042)

FKIE_CVE-2026-89042

GHSA-VW3M-3X7W-24G8

Tags

Sightings

Nomenclature