{"id":"CVE-2026-100371","state":"PUBLISHED","title":"InvoicePlane: Incomplete Authorization Remediation in Users::form() Enables Primary Administrator Account Takeover via Email Reassignment and Password Recovery","description":"InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. In version 1.7.2, an authorization guard to Users::change_password(), was added to address a previous authorization flaw that allowed a secondary administrator (user_type=1, user_id != 1) to directly change the password of the primary administrator (user_id=1) through users/change_password/{id}. That remediation, however, protects only the direct password-change operation. It does not protect the identity attribute that password recovery actually trusts: user_email. Users::form() applies no equivalent object-level authorization check when editing the primary administrator's account, and user_email is not included in PROTECTED_FIELDS. A secondary administrator can therefore rewrite the primary administrator's email address, then drive the public password-recovery flow — which resolves the account by user_email — to receive the reset token and take over user_id=1. The result is an alternate attack path that achieves the same impact PR #1638 was intended to prevent: cross-administrator full account takeover of the primary administrator. This issue has been patched via commit 8616fa4.","publishedAt":"2026-09-28T20:15:17.155Z","updatedAt":"2026-09-29T13:51:08.087Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/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","status":"affected"}]}],"references":["https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-77hm-22wp-96wp","https://github.com/InvoicePlane/InvoicePlane/pull/1638","https://github.com/InvoicePlane/InvoicePlane/commit/8616fa45a61c1694b55bb9116e293269a0ced06a"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100371.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100371","state":"PUBLISHED","datePublished":"2026-09-28T20:15:17.155Z","dateUpdated":"2026-09-29T13:51:08.087Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-25T19:19:54.699Z"},"containers":{"cna":{"title":"InvoicePlane: Incomplete Authorization Remediation in Users::form() Enables Primary Administrator Account Takeover via Email Reassignment and Password Recovery","descriptions":[{"lang":"en","value":"InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. In version 1.7.2, an authorization guard to Users::change_password(), was added to address a previous authorization flaw that allowed a secondary administrator (user_type=1, user_id != 1) to directly change the password of the primary administrator (user_id=1) through users/change_password/{id}. That remediation, however, protects only the direct password-change operation. It does not protect the identity attribute that password recovery actually trusts: user_email. Users::form() applies no equivalent object-level authorization check when editing the primary administrator's account, and user_email is not included in PROTECTED_FIELDS. A secondary administrator can therefore rewrite the primary administrator's email address, then drive the public password-recovery flow — which resolves the account by user_email — to receive the reset token and take over user_id=1. The result is an alternate attack path that achieves the same impact PR #1638 was intended to prevent: cross-administrator full account takeover of the primary administrator. This issue has been patched via commit 8616fa4."}],"affected":[{"vendor":"InvoicePlane","product":"InvoicePlane","versions":[{"version":"= 1.7.2","status":"affected"}]}],"references":[{"url":"https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-77hm-22wp-96wp","name":"https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-77hm-22wp-96wp","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/pull/1638","name":"https://github.com/InvoicePlane/InvoicePlane/pull/1638","tags":["x_refsource_MISC"]},{"url":"https://github.com/InvoicePlane/InvoicePlane/commit/8616fa45a61c1694b55bb9116e293269a0ced06a","name":"https://github.com/InvoicePlane/InvoicePlane/commit/8616fa45a61c1694b55bb9116e293269a0ced06a","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-28T20:15:17.155Z"},"source":{"advisory":"GHSA-77hm-22wp-96wp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-77hm-22wp-96wp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-29T13:50:48.186591Z","id":"CVE-2026-100371","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-29T13:51:08.087Z"}}]}}}