{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103237 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-103237 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-103237 is a high-severity missing authorization vulnerability in MISP, published on 30 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-103237 and fix it if it is affected.\n\nWhat it is: CVE-2026-103237 is a high-severity missing authorization vulnerability in MISP, published on 30 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-103237 in the wild and no public exploit code.\n\nAffected product: MISP. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-103237/ (Markdown: https://insights.sbomify.com/CVE-2026-103237/index.md)","id":"CVE-2026-103237","markdown":"https://insights.sbomify.com/CVE-2026-103237/index.md","name":"CVE-2026-103237","record":{"aliases":["GHSA-52c6-qg88-jh84"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"MISP threat sharing platform","requires_auth":"low_privilege","summary":"Authenticated users can bypass sanitization to modify or delete cross-tenant data in MISP by exploiting ORM nested key handling.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CIRCL","cpe":[],"cvss":{"score":8.3,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints (attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit), the application sanitizes the flat record by stripping the primary key and pinning the event_id or object_id to the caller's context. However, the underlying ORM's set() method gives priority to a nested key whose name matches the model alias and discards the outer scalar fields.\n\nAn authenticated user with basic write permissions can exploit this by embedding a nested block under the model alias key inside their request. The sanitization logic (id removal, event_id pinning) is applied to the outer record, but the ORM binds to the inner record instead, which carries an attacker-chosen id and event_id. This allows the attacker to overwrite, re-parent, or soft-delete rows belonging to other organizations or events they have no read access to.\n\nImpact:\n\n- Cross-tenant data integrity compromise (attribute values rewritten, objects re-parented to attacker events, rows soft-deleted)\n\n- Affects multiple entity types: Attribute, Object, EventReport, Sighting, AttributeTag, ShadowAttribute\n\n- Requires only a low-privilege authenticated account with perm_add\n\nAffected versions: \u003c2.5.48","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows","id":"CVE-2026-103237","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"MISP Tag Collection Save Allows Privilege Escalation via Sibling Model Injection","id":"CVE-2026-103239"},"packages":[],"prev":{"headline":"MISP Event Delegation Mass Assignment Allows Retargeting Delegation to Arbitrary Events","id":"CVE-2026-103235"},"products":["MISP"],"published":"2026-09-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-30","vendors":["MISP"]},"summary":"Authenticated users can bypass sanitization to modify or delete cross-tenant data in MISP by exploiting ORM nested key handling.","url":"https://insights.sbomify.com/CVE-2026-103237/"}