{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56422", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-06-22T11:42:55.345Z", "datePublished": "2026-06-22T11:43:02.690Z", "dateUpdated": "2026-06-23T05:58:54.059Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "misp", "repo": "https://github.com/misp/misp", "vendor": "misp", "versions": [{"lessThanOrEqual": "2.5.41", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "remediation developer", "value": "Andras Iklody"}, {"lang": "en", "type": "analyst", "value": "Jeroen Pinoy"}, {"lang": "en", "type": "tool", "value": "Claude (the international export version)"}, {"lang": "en", "type": "analyst", "value": "Jakub Chyli\u0144ski"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Multiple MISP core controllers and model capture paths accepted client-controlled request fields such as primary keys (<code>id</code>) and ownership/scope foreign keys (<code>event_id</code>, <code>org_id</code>, <code>user_id</code>, <code>sharing_group_id</code>, <code>galaxy_cluster_uuid</code>, <code>organisation_uuid</code>, and related nested object identifiers) without consistently stripping, pinning, or revalidating them against the server-authorized object.</p><p>In affected paths, an authenticated user with access to one authorized object could submit crafted REST or form payloads that caused MISP to save data against a different object than the one checked by the authorization logic. Depending on the endpoint, this could allow object overwrite, object re-parenting, ownership transfer, unauthorized sharing-group scoping, event/object injection, proposal retargeting, or stored attacker-controlled content appearing in another user\u2019s context.</p><p>The fixes harden affected create/edit/import flows by stripping client-supplied primary keys on create-only saves, re-pinning route- or database-authorized identifiers before save operations, validating effective sharing-group scope, and adding field whitelists where ownership fields must never be editable. The initial broad fix also added a central <code>CRUDComponent::edit()</code>&nbsp;primary-key re-pin so payload-supplied IDs cannot redirect saves away from the already-authorized row. GitHub\u2019s patch for <code>7acf8220c</code>&nbsp;describes this central issue as <code>CRUDComponent::edit()</code>&nbsp;copying supplied fields, including a payload primary key, onto the loaded record, allowing CakePHP <code>save()</code>&nbsp;to update an arbitrary row unless the loaded ID is re-pinned. </p><br>"}], "value": "Multiple MISP core controllers and model capture paths accepted client-controlled request fields such as primary keys (id) and ownership/scope foreign keys (event_id, org_id, user_id, sharing_group_id, galaxy_cluster_uuid, organisation_uuid, and related nested object identifiers) without consistently stripping, pinning, or revalidating them against the server-authorized object.\n\nIn affected paths, an authenticated user with access to one authorized object could submit crafted REST or form payloads that caused MISP to save data against a different object than the one checked by the authorization logic. 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GitHub\u2019s patch for <code>7acf8220c</code>&nbsp;describes this central issue as <code>CRUDComponent::edit()</code>&nbsp;copying supplied fields, including a payload primary key, onto the loaded record, allowing CakePHP <code>save()</code>&nbsp;to update an arbitrary row unless the loaded ID is re-pinned. </p><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-639", "description": "CWE-639 Authorization Bypass Through User-Controlled Key"}]}], "providerMetadata": {"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "shortName": "CIRCL", "dateUpdated": "2026-06-23T05:58:54.059Z"}}}, "cveMetadata": {"cveId": "CVE-2026-56422", "state": "PUBLISHED", "dateUpdated": "2026-06-23T05:58:54.059Z", "dateReserved": "2026-06-22T11:42:55.345Z", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "datePublished": "2026-06-22T11:43:02.690Z", "assignerShortName": "CIRCL"}, "dataVersion": "5.2"}

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