FKIE_CVE-2026-105640

Vulnerability from fkie_nvd - Published: 2026-10-05 19:17 - Updated: 2026-10-05 19:17
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
Plane is an open-source project management tool. Prior to 1.4.0, Plane trusts email addresses returned by Gitea OAuth and by self-managed GitLab OAuth deployments where email confirmation is disabled, without verifying that the provider authenticated ownership of the address. An attacker can set an OAuth identity's unverified provider email to a victim's address, which Plane matches directly to the victim's existing local account. The attacker can then log in to the victim's Plane account without knowing the victim's password. GitHub, GitLab.com, and Google are not affected because those providers return verified email addresses. This issue is fixed in 1.4.0.
References
security-advisories@github.comhttps://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2
security-advisories@github.comhttps://github.com/makeplane/plane/pull/9289
security-advisories@github.comhttps://github.com/makeplane/plane/releases/tag/v1.4.0
security-advisories@github.comhttps://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "plane",
          "vendor": "makeplane",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Plane is an open-source project management tool. Prior to 1.4.0, Plane trusts email addresses returned by Gitea OAuth and by self-managed GitLab OAuth deployments where email confirmation is disabled, without verifying that the provider authenticated ownership of the address. An attacker can set an OAuth identity\u0027s unverified provider email to a victim\u0027s address, which Plane matches directly to the victim\u0027s existing local account. The attacker can then log in to the victim\u0027s Plane account without knowing the victim\u0027s password. GitHub, GitLab.com, and Google are not affected because those providers return verified email addresses. This issue is fixed in 1.4.0."
    }
  ],
  "id": "CVE-2026-105640",
  "lastModified": "2026-10-05T19:17:18.520",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-105640",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-05T18:32:52.620033Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-05T19:17:18.383",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/pull/9289"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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