FKIE_CVE-2026-34736

Vulnerability from fkie_nvd - Published: 2026-04-02 19:21 - Updated: 2026-07-24 21:10
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Open edX Platform enables the authoring and delivery of online learning at any scale. From the maple release to before the ulmo release, an unauthenticated attacker can fully bypass the email verification process by combining two issues: the OAuth2 password grant issuing tokens to inactive users (documented behavior) and the activation_key being exposed in the REST API response at /api/user/v1/accounts/. This issue has been patched in the ulmo release.
References
security-advisories@github.comhttps://github.com/openedx/openedx-platform/commit/ad342ae16e6af0b46460ca05f47697ac755feba8
security-advisories@github.comhttps://github.com/openedx/openedx-platform/security/advisories/GHSA-m6rg-rp98-4crw
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "openedx-platform",
          "vendor": "openedx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= maple, \u003c ulmo"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Open edX Platform enables the authoring and delivery of online learning at any scale. From the maple release to before the ulmo release, an unauthenticated attacker can fully bypass the email verification process by combining two issues: the OAuth2 password grant issuing tokens to inactive users (documented behavior) and the activation_key being exposed in the REST API response at /api/user/v1/accounts/. This issue has been patched in the ulmo release."
    },
    {
      "lang": "es",
      "value": "La Plataforma Open edX permite la creaci\u00f3n y entrega de aprendizaje en l\u00ednea a cualquier escala. Desde la versi\u00f3n maple hasta antes de la versi\u00f3n ulmo, un atacante no autenticado puede eludir completamente el proceso de verificaci\u00f3n de correo electr\u00f3nico al combinar dos problemas: la concesi\u00f3n de contrase\u00f1a de OAuth2 que emite tokens a usuarios inactivos (comportamiento documentado) y la exposici\u00f3n de la activation_key en la respuesta de la API REST en /api/user/v1/accounts/. Este problema ha sido parcheado en la versi\u00f3n ulmo."
    }
  ],
  "id": "CVE-2026-34736",
  "lastModified": "2026-07-24T21:10:00.143",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34736",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-03T15:48:43.267069Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-02T19:21:32.867",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openedx/openedx-platform/commit/ad342ae16e6af0b46460ca05f47697ac755feba8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openedx/openedx-platform/security/advisories/GHSA-m6rg-rp98-4crw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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