Vulnerability-Lookup

GHSA-WQ52-W6CX-5MG2

Vulnerability from github – Published: 2026-05-14 03:32 – Updated: 2026-05-14 06:31

Details

Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation.

Severity

7.5 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46419"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-253"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-14T02:17:21Z",
    "severity": "HIGH"
  },
  "details": "Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly checks a function\u0027s return value in the second factor flow, leading to impersonation.",
  "id": "GHSA-wq52-w6cx-5mg2",
  "modified": "2026-05-14T06:31:32Z",
  "published": "2026-05-14T03:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46419"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Yubico/java-webauthn-server/releases/tag/2.8.2"
    },
    {
      "type": "WEB",
      "url": "https://www.yubico.com/support/security-advisories/ysa-2026-02"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46419 (GCVE-0-2026-46419)

Vulnerability from cvelistv5 – Published: 2026-05-14 00:00 – Updated: 2026-05-14 13:52

Summary

Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-253 - Incorrect Check of Function Return Value

Assigner

mitre

References

2 references

URL	Tags
https://www.yubico.com/support/security-advisorie…
https://github.com/Yubico/java-webauthn-server/re…

Impacted products

1 product

Vendor	Product	Version
Yubico	webauthn-server-core	Affected: 2.8.0 , < 2.8.2 (semver)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46419",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-14T13:52:44.564338Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-14T13:52:51.531Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "webauthn-server-core",
          "vendor": "Yubico",
          "versions": [
            {
              "lessThan": "2.8.2",
              "status": "affected",
              "version": "2.8.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly checks a function\u0027s return value in the second factor flow, leading to impersonation."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-253",
              "description": "CWE-253 Incorrect Check of Function Return Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-14T02:06:22.112Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.yubico.com/support/security-advisories/ysa-2026-02/"
        },
        {
          "url": "https://github.com/Yubico/java-webauthn-server/releases/tag/2.8.2"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-46419",
    "datePublished": "2026-05-14T00:00:00.000Z",
    "dateReserved": "2026-05-13T00:00:00.000Z",
    "dateUpdated": "2026-05-14T13:52:51.531Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-WQ52-W6CX-5MG2

CVE-2026-46419 (GCVE-0-2026-46419)

Tags

Sightings

Nomenclature