{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21264 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21264 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21264 is a critical cross-site scripting vulnerability in Microsoft Account, published on 22 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-21264 and fix it if it is affected.\n\nWhat it is: CVE-2026-21264 is a critical cross-site scripting vulnerability in Microsoft Account, published on 22 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-21264 in the wild and no public exploit code.\n\nAffected product: Microsoft Account. 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-2026-21264/ (Markdown: https://insights.sbomify.com/CVE-2026-21264/index.md)","id":"CVE-2026-21264","markdown":"https://insights.sbomify.com/CVE-2026-21264/index.md","name":"CVE-2026-21264","record":{"aliases":["GHSA-3h7x-hf52-fwj9"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Account","requires_auth":"none","summary":"An attacker can perform spoofing attacks against Microsoft Account users via cross-site scripting, requiring a vendor patch.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"account","vendor":"microsoft"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account 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":"Microsoft Account Spoofing Vulnerability","id":"CVE-2026-21264","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Secure Boot Certificate Expiration Security Feature Bypass Vulnerability","id":"CVE-2026-21265"},"packages":[],"prev":{"headline":"SQL Server Elevation of Privilege Vulnerability","id":"CVE-2026-21262"},"products":["Microsoft Account"],"published":"2026-01-22","related":[{"cvss_score":9.8,"headline":"Microsoft Account Remote Code Execution Vulnerability","id":"CVE-2026-56165","kev_date_added":null,"published":"2026-07-23"},{"cvss_score":8.2,"headline":"Microsoft Account Elevation of Privilege Vulnerability","id":"CVE-2025-21396","kev_date_added":null,"published":"2025-01-29"}],"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":"total"},"state":"PUBLISHED","updated":"2026-07-30","vendors":["Microsoft"]},"summary":"An attacker can perform spoofing attacks against Microsoft Account users via cross-site scripting, requiring a vendor patch.","url":"https://insights.sbomify.com/CVE-2026-21264/"}