{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-93854 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-93854 is a high-severity missing authorization vulnerability in OpenStack Blazar, published on 18 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-2026-93854 and fix it if it is affected.\n\nWhat it is: CVE-2026-93854 is a high-severity missing authorization vulnerability in OpenStack Blazar, published on 18 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-2026-93854 in the wild and no public exploit code.\n\nAffected product: OpenStack Blazar. 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-2026-93854/ (Markdown: https://insights.sbomify.com/CVE-2026-93854/index.md)","id":"CVE-2026-93854","markdown":"https://insights.sbomify.com/CVE-2026-93854/index.md","name":"CVE-2026-93854","record":{"aliases":["DEBIAN-CVE-2026-93854","GHSA-4rvg-j972-3xw2","UBUNTU-CVE-2026-93854"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenStack Blazar","requires_auth":"low_privilege","summary":"Authenticated users can modify or delete other users' leases due to a parameter mismatch in authorization checks, bypassing ownership restrictions.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1025","name":"Comparison Using Wrong Factors"}],"description":"In OpenStack Blazar before 17.0.1, the V2 lease API does not enforce object-level authorization on its update and delete operations (PUT /v2/leases/{lease_id} and DELETE /v2/leases/{lease_id}). The policy authorize() wrapper attempts to load the target lease to build the authorization target from its owner, but it looks up the lease under the keyword \"lease_id\" whereas the controller methods name the parameter \"id\" (and the wsme_pecan.wsexpose wrapper delivers it positionally). The lookup returns None, and thus authorization falls back to the requesting user's own project_id/user_id instead of the target lease owner. Any authenticated user who knows a lease ID can therefore modify or delete leases belonging to other users and projects, bypassing the intended ownership check.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Missing authorization in Blazar","id":"CVE-2026-93854","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":"SendPress Newsletters \u003c= 1.26.1.20 - Unauthenticated SQL Injection via 'subscriberid' Parameter","id":"CVE-2026-93855"},"packages":[],"prev":{"headline":"Barman snapshot backup deletion trusts unverified backup catalog metadata","id":"CVE-2026-93853"},"products":["Blazar"],"published":"2026-09-18","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":"2026-09-22","vendors":["OpenStack"]},"summary":"Authenticated users can modify or delete other users' leases due to a parameter mismatch in authorization checks, bypassing ownership restrictions.","url":"https://insights.sbomify.com/CVE-2026-93854/"}