{"answers":{"affected":"3 open source packages ship an affected version, including briefcase. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-33430 in the wild and no public exploit code.","fix":"Upgrade briefcase to 0.3.26 or later.","what":"CVE-2026-33430 is a high-severity vulnerability in beeware briefcase, published on 26 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33430 and fix it if it is affected.\n\nWhat it is: CVE-2026-33430 is a high-severity vulnerability in beeware briefcase, published on 26 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-33430 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- briefcase (PyPI): affected from 0.3.0; fixed in 0.3.26\n- briefcase (PyPI): affected from 0.3.0; fixed in 0.3.26\n- briefcase (PyPI): affected from 0.3.0; fixed in 0.3.26\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-2026-33430/ (Markdown: https://insights.sbomify.com/CVE-2026-33430/index.md)","id":"CVE-2026-33430","markdown":"https://insights.sbomify.com/CVE-2026-33430/index.md","name":"CVE-2026-33430","record":{"aliases":["GHSA-r3r2-35v9-v238","PYSEC-2026-27"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Python packaging tool","requires_auth":"low_privilege","summary":"A low-privilege user can modify application binaries in per-machine Windows installs, leading to code execution with administrator privileges when the app is run.","user_interaction":"required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"briefcase","vendor":"beeware"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-732","name":"Incorrect Permission Assignment for Critical Resource"}],"description":"Briefcase is a tool for converting a Python project into a standalone native application. Starting in version 0.3.0 and prior to version 0.3.26, if a developer uses Briefcase to produce an Windows MSI installer for a project, and that project is installed for All Users (i.e., per-machine scope), the installation process creates an directory that inherits all the permissions of the parent directory. Depending on the location chosen by the installing user, this may allow a low privilege but authenticated user to replace or modify the binaries installed by the application. If an administrator then runs the altered binary, the binary will run with elevated privileges. The problem is caused by the template used to generate the WXS file for Windows projects. It was fixed in the templates used in Briefcase 0.3.26, 0.4.0, and 0.4.1. Re-running `briefcase create` on your Briefcase project will result in the updated templates being used. As a workaround, the patch can be added to any existing Briefcase .wxs file generated by Briefcase 0.3.24 or later.","ecosystems":["PyPI"],"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":"Briefcase: Windows MSI Installer Privilege Escalation via Insecure Directory Permissions","id":"CVE-2026-33430","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Roxy-WI Vulnerable to Authenticated Arbitrary File Read via Path Traversal in Config Version Viewer","id":"CVE-2026-33431"},"packages":[{"ecosystem":"PyPI","fixed":["0.3.26"],"introduced":["0.3.0"],"last_affected":[],"package":"briefcase","purl":null,"source":"GHSA-r3r2-35v9-v238"},{"ecosystem":"PyPI","fixed":["0.3.26"],"introduced":["0.3.0"],"last_affected":[],"package":"briefcase","purl":"pkg:pypi/briefcase","source":"GHSA-r3r2-35v9-v238"},{"ecosystem":"PyPI","fixed":["0.3.26"],"introduced":["0.3.0"],"last_affected":[],"package":"briefcase","purl":"pkg:pypi/briefcase","source":"PYSEC-2026-27"}],"prev":{"headline":"Parse Server: Protected field change detection oracle via LiveQuery watch parameter","id":"CVE-2026-33429"},"products":["briefcase"],"published":"2026-03-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"total"},"state":"PUBLISHED","updated":"2026-04-01","vendors":["beeware"]},"summary":"A low-privilege user can modify application binaries in per-machine Windows installs, leading to code execution with administrator privileges when the app is run.","url":"https://insights.sbomify.com/CVE-2026-33430/"}