{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104955", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-02T18:16:13.628Z", "datePublished": "2026-10-05T16:42:25.771Z", "dateUpdated": "2026-10-05T16:42:25.771Z"}, "containers": {"cna": {"title": "Plane: Project Member can escalate Project Guest to Member via PATCH /project-members/{pk} (BAC / Privilege Escalation)", "problemTypes": [{"descriptions": [{"cweId": "CWE-269", "lang": "en", "description": "CWE-269: Improper Privilege Management", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-285", "lang": "en", "description": "CWE-285: Improper Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/makeplane/plane/security/advisories/GHSA-x63v-p7wc-47x4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/makeplane/plane/security/advisories/GHSA-x63v-p7wc-47x4"}, {"name": "https://github.com/makeplane/plane/pull/9014", "tags": ["x_refsource_MISC"], "url": "https://github.com/makeplane/plane/pull/9014"}, {"name": "https://github.com/makeplane/plane/commit/4c1bdd1d625fa3f1141e8af9c15423946472069e", "tags": ["x_refsource_MISC"], "url": "https://github.com/makeplane/plane/commit/4c1bdd1d625fa3f1141e8af9c15423946472069e"}, {"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"}], "affected": [{"vendor": "makeplane", "product": "plane", "versions": [{"version": "< 1.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-05T16:42:25.771Z"}, "descriptions": [{"lang": "en", "value": "Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/{workspace_slug}/projects/{project_id}/members/{member_pk}/ to change another user's project role. The role-update logic blocks only a new role higher than the requester's role, so assigning the equal Member role bypasses the insufficient validation and promotes a Project Guest with role 5 to Member without Project Admin approval. This unauthorized promotion grants the guest the additional project capabilities associated with the Member role and allows a regular member to bypass project governance controls. This issue is fixed in 1.4.0."}], "source": {"advisory": "GHSA-x63v-p7wc-47x4", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "plane", "vendor": "makeplane", "versions": [{"status": "affected", "version": "< 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, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/{workspace_slug}/projects/{project_id}/members/{member_pk}/ to change another user's project role. The role-update logic blocks only a new role higher than the requester's role, so assigning the equal Member role bypasses the insufficient validation and promotes a Project Guest with role 5 to Member without Project Admin approval. This unauthorized promotion grants the guest the additional project capabilities associated with the Member role and allows a regular member to bypass project governance controls. This issue is fixed in 1.4.0."}], "id": "CVE-2026-104955", "lastModified": "2026-10-05T17:17:11.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-05T17:17:10.970", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/makeplane/plane/commit/4c1bdd1d625fa3f1141e8af9c15423946472069e"}, {"source": "security-advisories@github.com", "url": "https://github.com/makeplane/plane/pull/9014"}, {"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-x63v-p7wc-47x4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-285"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "plane", "source": "cna", "vendor": "makeplane"}, "product": "plane", "vendor": "makeplane"}], "created": "2026-10-05T18:30:19.435821+00:00", "updated": "2026-10-05T18:30:19.839177+00:00", "vendors": ["makeplane", "makeplane$PRODUCT$plane"]}