CVE-2026-94606 (GCVE-0-2026-94606)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:23 – Updated: 2026-09-24 16:23
VLAI
Title
authentik: MFA Bypass via State Confusion / Parameter Injection in AuthenticatorEmailStage
Summary
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, authentik email authenticator enrollment during an authentication or enrollment flow accepts a recipient address supplied in the setup request instead of using the address already established by the flow. An actor who knows a target user's password can substitute an attacker-controlled address, receive the one-time code, and finish enrolling the factor as the target. The target must not have enrolled the email factor already. Successful enrollment gives the actor a session as the target and access to single sign-on applications behind the account. Other authenticator types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.
Severity
8.9 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
CWE
  • CWE-287 - Improper Authentication
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version CPE status
goauthentik authentik Affected: < 2026.2.7
Affected: >= 2026.5.0, < 2026.5.7
Affected: >= 2026.8.0, < 2026.8.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "authentik",
          "vendor": "goauthentik",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2026.2.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.5.0, \u003c 2026.5.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.8.0, \u003c 2026.8.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, authentik email authenticator enrollment during an authentication or enrollment flow accepts a recipient address supplied in the setup request instead of using the address already established by the flow. An actor who knows a target user\u0027s password can substitute an attacker-controlled address, receive the one-time code, and finish enrolling the factor as the target. The target must not have enrolled the email factor already. Successful enrollment gives the actor a session as the target and access to single sign-on applications behind the account. Other authenticator types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.9,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-807",
              "description": "CWE-807: Reliance on Untrusted Inputs in a Security Decision",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:23:30.925Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/goauthentik/authentik/security/advisories/GHSA-qgqp-xh8r-v73r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-qgqp-xh8r-v73r"
        },
        {
          "name": "https://github.com/goauthentik/authentik/pull/25958",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/pull/25958"
        },
        {
          "name": "https://github.com/goauthentik/authentik/pull/25963",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/pull/25963"
        },
        {
          "name": "https://github.com/goauthentik/authentik/pull/25968",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/pull/25968"
        },
        {
          "name": "https://github.com/goauthentik/authentik/pull/25973",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/pull/25973"
        },
        {
          "name": "https://github.com/goauthentik/authentik/commit/01d4349f2aaa9beda532f92e2a251a17fefee9b3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/commit/01d4349f2aaa9beda532f92e2a251a17fefee9b3"
        },
        {
          "name": "https://github.com/goauthentik/authentik/commit/1fcf9868133e5d05e266edbc1f6f3ee972baa3f9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/commit/1fcf9868133e5d05e266edbc1f6f3ee972baa3f9"
        },
        {
          "name": "https://github.com/goauthentik/authentik/commit/c10ae83ebf8c61de2f1922edf1fab504d9f3b06f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/commit/c10ae83ebf8c61de2f1922edf1fab504d9f3b06f"
        },
        {
          "name": "https://github.com/goauthentik/authentik/commit/ec41732339726fba477182c0906a8d930b145beb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/commit/ec41732339726fba477182c0906a8d930b145beb"
        },
        {
          "name": "https://docs.goauthentik.io/releases/2026.2#fixed-in-202627",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.goauthentik.io/releases/2026.2#fixed-in-202627"
        },
        {
          "name": "https://docs.goauthentik.io/releases/2026.5#fixed-in-202657",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.goauthentik.io/releases/2026.5#fixed-in-202657"
        },
        {
          "name": "https://docs.goauthentik.io/releases/2026.8#fixed-in-202682",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.goauthentik.io/releases/2026.8#fixed-in-202682"
        },
        {
          "name": "https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7"
        },
        {
          "name": "https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7"
        },
        {
          "name": "https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2"
        }
      ],
      "source": {
        "advisory": "GHSA-qgqp-xh8r-v73r",
        "discovery": "UNKNOWN"
      },
      "title": "authentik: MFA Bypass via State Confusion / Parameter Injection in AuthenticatorEmailStage"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-94606",
    "datePublished": "2026-09-24T16:23:30.925Z",
    "dateReserved": "2026-09-21T21:32:23.741Z",
    "dateUpdated": "2026-09-24T16:23:30.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-94606",
      "date": "2026-09-25",
      "epss": "0.00489",
      "percentile": "0.39492"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "authentik",
                "vendor": "goauthentik",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 2026.2.7"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2026.5.0, \u003c 2026.5.7"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2026.8.0, \u003c 2026.8.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, authentik email authenticator enrollment during an authentication or enrollment flow accepts a recipient address supplied in the setup request instead of using the address already established by the flow. An actor who knows a target user\u0027s password can substitute an attacker-controlled address, receive the one-time code, and finish enrolling the factor as the target. The target must not have enrolled the email factor already. Successful enrollment gives the actor a session as the target and access to single sign-on applications behind the account. Other authenticator types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2."
          }
        ],
        "id": "CVE-2026-94606",
        "lastModified": "2026-09-25T13:22:04.673",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 8.9,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 6.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-24T17:17:17.063",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://docs.goauthentik.io/releases/2026.2#fixed-in-202627"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://docs.goauthentik.io/releases/2026.5#fixed-in-202657"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://docs.goauthentik.io/releases/2026.8#fixed-in-202682"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/commit/01d4349f2aaa9beda532f92e2a251a17fefee9b3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/commit/1fcf9868133e5d05e266edbc1f6f3ee972baa3f9"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/commit/c10ae83ebf8c61de2f1922edf1fab504d9f3b06f"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/commit/ec41732339726fba477182c0906a8d930b145beb"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/pull/25958"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/pull/25963"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/pull/25968"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/pull/25973"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-qgqp-xh8r-v73r"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-287"
              },
              {
                "lang": "en",
                "value": "CWE-807"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.