{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23656 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-23656 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-23656 is a medium-severity vulnerability in Microsoft Windows App Client for Windows Desktop, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-23656 and fix it if it is affected.\n\nWhat it is: CVE-2026-23656 is a medium-severity vulnerability in Microsoft Windows App Client for Windows Desktop, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-23656 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows App Client for Windows Desktop. 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-2026-23656/ (Markdown: https://insights.sbomify.com/CVE-2026-23656/index.md)","id":"CVE-2026-23656","markdown":"https://insights.sbomify.com/CVE-2026-23656/index.md","name":"CVE-2026-23656","record":{"aliases":["GHSA-53j2-qxv2-hfqj"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows App Installer","requires_auth":"none","summary":"An attacker can spoof data authenticity in Windows App Installer over a network, bypassing security verification mechanisms.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_app","vendor":"microsoft"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Windows App Installer Spoofing Vulnerability","id":"CVE-2026-23656","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Word Remote Code Execution Vulnerability","id":"CVE-2026-23657"},"packages":[],"prev":{"headline":"Microsoft ACI Confidential Containers Information Disclosure Vulnerability","id":"CVE-2026-23655"},"products":["Windows App Client for Windows Desktop"],"published":"2026-03-10","related":[{"cvss_score":9.8,"headline":"Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability","id":"CVE-2026-59124","kev_date_added":null,"published":"2026-08-11"},{"cvss_score":8.8,"headline":"Microsoft High Performance Computing (HPC) Pack Elevation of Privilege Vulnerability","id":"CVE-2026-59133","kev_date_added":null,"published":"2026-08-11"},{"cvss_score":7.8,"headline":"Privilege escalation in Microsoft Remote Desktop for Mac","id":"CVE-2020-0919","kev_date_added":null,"published":"2020-04-15"},{"cvss_score":6.5,"headline":"Windows App for Mac Information Disclosure Vulnerability","id":"CVE-2026-69550","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":4.7,"headline":"Windows App for Mac Installer Elevation of Privilege Vulnerability","id":"CVE-2026-21517","kev_date_added":null,"published":"2026-02-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-06-19","vendors":["Microsoft"]},"summary":"An attacker can spoof data authenticity in Windows App Installer over a network, bypassing security verification mechanisms.","url":"https://insights.sbomify.com/CVE-2026-23656/"}