{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26164 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-26164 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-26164 is a high-severity command injection vulnerability in Microsoft 365 Copilot's Business Chat, published on 7 May 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-2026-26164 and fix it if it is affected.\n\nWhat it is: CVE-2026-26164 is a high-severity command injection vulnerability in Microsoft 365 Copilot's Business Chat, published on 7 May 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-2026-26164 in the wild and no public exploit code.\n\nAffected product: Microsoft 365 Copilot's Business Chat. 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-2026-26164/ (Markdown: https://insights.sbomify.com/CVE-2026-26164/index.md)","id":"CVE-2026-26164","markdown":"https://insights.sbomify.com/CVE-2026-26164/index.md","name":"CVE-2026-26164","record":{"aliases":["GHSA-qvcj-rgrx-wm72"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft 365 Copilot","requires_auth":"none","summary":"An unauthorized attacker can exploit command injection in Microsoft 365 Copilot Business Chat to disclose sensitive information over the network.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"365_copilot_chat","vendor":"microsoft"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information 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":"M365 Copilot Information Disclosure Vulnerability","id":"CVE-2026-26164","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Shell Elevation of Privilege Vulnerability","id":"CVE-2026-26165"},"packages":[],"prev":{"headline":"Windows Kernel Elevation of Privilege Vulnerability","id":"CVE-2026-26163"},"products":["Microsoft 365 Copilot's Business Chat"],"published":"2026-05-07","related":[{"cvss_score":9.9,"headline":"Microsoft Exchange Elevation of Privilege Vulnerability","id":"CVE-2026-26137","kev_date_added":null,"published":"2026-03-19"},{"cvss_score":9.3,"headline":"Copilot Information Disclosure Vulnerability","id":"CVE-2025-59272","kev_date_added":null,"published":"2025-10-09"},{"cvss_score":9.3,"headline":"Copilot Information Disclosure Vulnerability","id":"CVE-2025-59286","kev_date_added":null,"published":"2025-10-09"},{"cvss_score":8.6,"headline":"Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability","id":"CVE-2026-78501","kev_date_added":null,"published":"2026-09-17"},{"cvss_score":8.2,"headline":"Microsoft 365 Copilot BizChat Information Disclosure Vulnerability","id":"CVE-2025-53787","kev_date_added":null,"published":"2025-08-07"},{"cvss_score":7.5,"headline":"M365 Copilot Information Disclosure Vulnerability","id":"CVE-2026-26129","kev_date_added":null,"published":"2026-05-07"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-10","vendors":["Microsoft"]},"summary":"An unauthorized attacker can exploit command injection in Microsoft 365 Copilot Business Chat to disclose sensitive information over the network.","url":"https://insights.sbomify.com/CVE-2026-26164/"}