{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-91851 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-91851 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-91851 is a medium-severity authentication bypass vulnerability in MISP, published on 15 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-2026-91851 and fix it if it is affected.\n\nWhat it is: CVE-2026-91851 is a medium-severity authentication bypass vulnerability in MISP, published on 15 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-2026-91851 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-2026-91851/ (Markdown: https://insights.sbomify.com/CVE-2026-91851/index.md)","id":"CVE-2026-91851","markdown":"https://insights.sbomify.com/CVE-2026-91851/index.md","name":"CVE-2026-91851","record":{"aliases":["GHSA-x44q-9w6w-p22f"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"MISP threat sharing","requires_auth":"low_privilege","summary":"Attackers can bypass dashboard template restrictions in MISP due to MySQL type coercion, accessing restricted templates without proper permissions.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CIRCL","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-697","name":"Incorrect Comparison"}],"description":"Affected versions of MISP incorrectly filter dashboard templates that are restricted to a specific permission flag.\n\nDashboardsController::listTemplates() allowed a template when either:\n\n - its restrict_to_permission_flag matched one of the current user’s permission flags, or\n\n - restrict_to_permission_flag equaled integer 0\n\nHowever, restrict_to_permission_flag is a varchar. MySQL therefore performed numeric coercion when comparing the column against integer 0. Strings such as perm_site_admin convert numerically to zero, making expressions such as perm_site_admin = 0 evaluate true and causing the “unrestricted” branch to match permission-restricted templates as well.\n\nVersion affected: ≤2.5.45","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 Dashboard Template ACL Bypass Due to VARCHAR-to-Integer Type Coercion in Permission Flag Comparison","id":"CVE-2026-91851","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Sling XSS: CWE-79 multiple raw-string break-outs and ReDOS in XSSImpl","id":"CVE-2026-91852"},"packages":[],"prev":{"headline":"WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload","id":"CVE-2026-91849"},"products":["MISP"],"published":"2026-09-15","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":"2026-09-15","vendors":["MISP"]},"summary":"Attackers can bypass dashboard template restrictions in MISP due to MySQL type coercion, accessing restricted templates without proper permissions.","url":"https://insights.sbomify.com/CVE-2026-91851/"}