{"cve":{"cve_id":"CVE-2026-56422","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00362,"epss_percentile":0.27945,"epss_as_of":"2026-06-23","description":"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. 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’s context.\n\nThe 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 CRUDComponent::edit() primary-key re-pin so payload-supplied IDs cannot redirect saves away from the already-authorized row. GitHub’s patch for 7acf8220c describes this central issue as CRUDComponent::edit() copying supplied fields, including a payload primary key, onto the loaded record, allowing CakePHP save() to update an arbitrary row unless the loaded ID is re-pinned.","published_at":"2026-06-22T11:43:02.690000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":9.4,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-639"],"nvd_references":["https://github.com/MISP/MISP/commit/7acf8220cafac58bcfb362da37aca512fe4bb396","https://github.com/MISP/MISP/commit/bc182d55dde5686a36ca2eb88fe6c2adabb9fad9","https://github.com/MISP/MISP/commit/58f637aaab4d133e72f1454ebb963191d96d3b78","https://github.com/MISP/MISP/commit/05aad418c57bb78e6b58a843d70d45de8f50db45","https://github.com/MISP/MISP/commit/63aebc27a878233b9475c742985aaef909bc755b","https://github.com/MISP/MISP/commit/00b2e3dae56fa24ea750eb525cc4709b7e5bee85","https://github.com/MISP/MISP/commit/634f1f87c295193486c08c2c7ba1fee8a7339baa","https://github.com/MISP/MISP/commit/ab9619dfa6cb5210fd20fb3b0b57006e4fc93916","https://github.com/MISP/MISP/commit/8311427c2edd72a8341f0a65e1f11073d7ad9191","https://github.com/MISP/MISP/commit/c80a3533b3d787f45f5185a4621cc0f05b0cf2e5","https://github.com/MISP/MISP/commit/025f711506850aadb69cde1b57e5e5d57628c87f","https://github.com/MISP/MISP/commit/3ff6bd9cfdab5d41b4667ea7298d88ffd6f3fcb8","https://github.com/MISP/MISP/commit/84bafe69f5d0ab7f811371c0801a613f271ebc0b","https://github.com/MISP/MISP/commit/2cc26f38f3e85c594957899f09043d5193146607","https://github.com/MISP/MISP/commit/57433015815e59db5a1f11536f90920952cf3fcd","https://github.com/MISP/MISP/commit/9341690e9b6dde7f0605edea5533e05ba7362e35"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:57.805291Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"H","value_label":"High"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"H","value_label":"High"},{"metric":"SA","name":"Availability (Subsequent System)","value":"H","value_label":"High"}]},"affected":[{"vendor_slug":"misp","vendor_name":"misp","product_slug":"misp","product_name":"misp","version_start":"0","version_start_inclusive":true,"version_end":"2.5.41","version_end_inclusive":true,"cpe23_uri":"cve5:misp:misp:0:2.5.41"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/MISP/MISP/commit/7acf8220cafac58bcfb362da37aca512fe4bb396","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/bc182d55dde5686a36ca2eb88fe6c2adabb9fad9","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/58f637aaab4d133e72f1454ebb963191d96d3b78","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/05aad418c57bb78e6b58a843d70d45de8f50db45","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/63aebc27a878233b9475c742985aaef909bc755b","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/00b2e3dae56fa24ea750eb525cc4709b7e5bee85","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/634f1f87c295193486c08c2c7ba1fee8a7339baa","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/ab9619dfa6cb5210fd20fb3b0b57006e4fc93916","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/8311427c2edd72a8341f0a65e1f11073d7ad9191","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/c80a3533b3d787f45f5185a4621cc0f05b0cf2e5","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/025f711506850aadb69cde1b57e5e5d57628c87f","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/3ff6bd9cfdab5d41b4667ea7298d88ffd6f3fcb8","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/84bafe69f5d0ab7f811371c0801a613f271ebc0b","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/2cc26f38f3e85c594957899f09043d5193146607","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/57433015815e59db5a1f11536f90920952cf3fcd","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/MISP/MISP/commit/9341690e9b6dde7f0605edea5533e05ba7362e35","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-22T11:43:02.690000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"}]}