CVE-2026-105640 (GCVE-0-2026-105640)

Vulnerability from cvelistv5 – Published: 2026-10-05 18:11 – Updated: 2026-10-05 18:33
VLAI
Title
Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 18:32 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Vendor Product Version CPE status
makeplane plane Affected: < 1.4.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105640",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-05T18:32:52.620033Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-05T18:33:16.382Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "plane",
          "vendor": "makeplane",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.0"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-290",
              "description": "CWE-290: Authentication Bypass by Spoofing",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-05T18:11:35.680Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
        },
        {
          "name": "https://github.com/makeplane/plane/pull/9289",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/pull/9289"
        },
        {
          "name": "https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2"
        },
        {
          "name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
        }
      ],
      "source": {
        "advisory": "GHSA-7j95-vh8g-f365",
        "discovery": "UNKNOWN"
      },
      "title": "Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105640",
    "datePublished": "2026-10-05T18:11:35.680Z",
    "dateReserved": "2026-10-05T16:40:39.612Z",
    "dateUpdated": "2026-10-05T18:33:16.382Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "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"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-105640",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-05T18:32:52.620033Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-05T18:33:12.629Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "plane",
              "vendor": "makeplane",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.4.0"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-287",
                  "description": "CWE-287: Improper Authentication",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-290",
                  "description": "CWE-290: Authentication Bypass by Spoofing",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-05T18:11:35.680Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/makeplane/plane/security/advisories/GHSA-7j95-vh8g-f365"
            },
            {
              "name": "https://github.com/makeplane/plane/pull/9289",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/pull/9289"
            },
            {
              "name": "https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/commit/b91b61c379908d9e451613dbca23fc3803e926d2"
            },
            {
              "name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
            }
          ],
          "source": {
            "advisory": "GHSA-7j95-vh8g-f365",
            "discovery": "UNKNOWN"
          },
          "title": "Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-105640",
        "datePublished": "2026-10-05T18:11:35.680Z",
        "dateReserved": "2026-10-05T16:40:39.612Z",
        "dateUpdated": "2026-10-05T18:33:16.382Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.