{"id":"CVE-2026-55561","state":"PUBLISHED","title":"InvoicePlane: Guest user IDOR in quote approval and rejection","description":"InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-beta-1, guest users can approve or reject quotes belonging to any client, not just their assigned clients. The `approve()` and `reject()` methods in the Guest Quotes controller, `application/modules/guest/controllers/Quotes.php`, call `approve_quote_by_id($quote_id)` and `reject_quote_by_id($quote_id)` directly without the `where_in('ip_quotes.client_id', $this->user_clients)` scoping that sibling methods use. A guest user assigned to one client can change another client's quote status by supplying sequential integer `quote_id` values, and `email_quote_status()` also sends notification emails. Additionally, `generate_pdf()` calls `mark_viewed($quote_id)` before checking the client scope, allowing a guest user to mark another client's quote as viewed. These issues are fixed in version 1.7.2-beta-1 and the subsequent stable version 1.7.2.","publishedAt":"2026-10-28T22:33:47.140Z","updatedAt":"2026-10-28T22:33:47.140Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["InvoicePlane InvoicePlane"],"affected":[{"vendor":"InvoicePlane","product":"InvoicePlane","versions":[{"version":"< 1.7.2-beta-1","status":"affected"}]}],"references":["https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-6xj3-274m-4mvg","https://github.com/InvoicePlane/InvoicePlane/pull/1413","https://github.com/InvoicePlane/InvoicePlane/pull/1471","https://github.com/InvoicePlane/InvoicePlane/commit/424dc44eb54030b93176bb08cba07ba12d7ae451","https://github.com/InvoicePlane/InvoicePlane/commit/fca7792a24de0a749d881cbbe4af6f58e9545d20","https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2","https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2-beta-1"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55561.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55561","state":"PUBLISHED","datePublished":"2026-10-28T22:33:47.140Z","dateUpdated":"2026-10-28T22:33:47.140Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T23:11:20.213Z"},"containers":{"cna":{"title":"InvoicePlane: Guest user IDOR in quote approval and rejection","descriptions":[{"lang":"en","value":"InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-beta-1, guest users can approve or reject quotes belonging to any client, not just their assigned clients. The `approve()` and `reject()` methods in the Guest Quotes controller, `application/modules/guest/controllers/Quotes.php`, call `approve_quote_by_id($quote_id)` and `reject_quote_by_id($quote_id)` directly without the `where_in('ip_quotes.client_id', $this->user_clients)` scoping that sibling methods use. A guest user assigned to one client can change another client's quote status by supplying sequential integer `quote_id` values, and `email_quote_status()` also sends notification emails. Additionally, `generate_pdf()` calls `mark_viewed($quote_id)` before checking the client scope, allowing a guest user to mark another client's quote as viewed. These issues are fixed in version 1.7.2-beta-1 and the subsequent stable version 1.7.2."}],"affected":[{"vendor":"InvoicePlane","product":"InvoicePlane","versions":[{"version":"< 1.7.2-beta-1","status":"affected"}]}],"references":[{"url":"https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-6xj3-274m-4mvg","name":"https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-6xj3-274m-4mvg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/pull/1413","name":"https://github.com/InvoicePlane/InvoicePlane/pull/1413","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/pull/1471","name":"https://github.com/InvoicePlane/InvoicePlane/pull/1471","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/commit/424dc44eb54030b93176bb08cba07ba12d7ae451","name":"https://github.com/InvoicePlane/InvoicePlane/commit/424dc44eb54030b93176bb08cba07ba12d7ae451","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/commit/fca7792a24de0a749d881cbbe4af6f58e9545d20","name":"https://github.com/InvoicePlane/InvoicePlane/commit/fca7792a24de0a749d881cbbe4af6f58e9545d20","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2","name":"https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2-beta-1","name":"https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2-beta-1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-28T22:33:47.140Z"},"source":{"advisory":"GHSA-6xj3-274m-4mvg","discovery":"UNKNOWN"}}}}}