FKIE_CVE-2026-44681

Vulnerability from fkie_nvd - Published: 2026-05-27 20:16 - Updated: 2026-06-17 10:51
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1.
References
security-advisories@github.comhttps://github.com/authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2Exploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/authlib/authlib/security/advisories/GHSA-r95x-qfjj-fjj2Exploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
authlib authlib *
authlib authlib 1.7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "authlib",
          "vendor": "authlib",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.12"
            },
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              "version": "\u003e= 1.7.0, \u003c 1.7.1"
            }
          ]
        }
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    }
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  "configurations": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib\u0027s OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1."
    }
  ],
  "id": "CVE-2026-44681",
  "lastModified": "2026-06-17T10:51:14.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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          "options": [
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            {
              "technicalImpact": "partial"
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          "role": "CISA Coordinator",
          "timestamp": "2026-06-02T16:56:23.887057Z",
          "version": "2.0.3"
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  "published": "2026-05-27T20:16:37.463",
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      "tags": [
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          "value": "CWE-601"
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          "value": "CWE-863"
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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