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FKIE_CVE-2026-81888

Vulnerability from fkie_nvd - Published: 2026-08-31 21:17 - Updated: 2026-09-09 21:09
Severity
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Summary
@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the `state` value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This defeats the `state`-based CSRF protection under default usage. Version 0.8.6 has a patch.
References
security-advisories@github.comhttps://github.com/honojs/middleware/commit/b37765f40b7bddb1d8fce39573b085222dea58c1
security-advisories@github.comhttps://github.com/honojs/middleware/pull/2040
security-advisories@github.comhttps://github.com/honojs/middleware/releases/tag/%40hono%2Foauth-providers%400.8.6
security-advisories@github.comhttps://github.com/honojs/middleware/security/advisories/GHSA-fm3f-ch8h-qw8q
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "@hono/oauth-providers",
          "vendor": "honojs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.8.6"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the `state` value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This defeats the `state`-based CSRF protection under default usage. Version 0.8.6 has a patch."
    }
  ],
  "id": "CVE-2026-81888",
  "lastModified": "2026-09-09T21:09:13.080",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-81888",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-01T14:15:08.751502Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-31T21:17:52.317",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/honojs/middleware/commit/b37765f40b7bddb1d8fce39573b085222dea58c1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/honojs/middleware/pull/2040"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/honojs/middleware/releases/tag/%40hono%2Foauth-providers%400.8.6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/honojs/middleware/security/advisories/GHSA-fm3f-ch8h-qw8q"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        },
        {
          "lang": "en",
          "value": "CWE-1275"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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