{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-70279 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-70279 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-70279 is a critical cross-site scripting vulnerability in Microsoft Exchange Server 2016 Cumulative Update 23, published on 13 Oct 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-2026-70279 and fix it if it is affected.\n\nWhat it is: CVE-2026-70279 is a critical cross-site scripting vulnerability in Microsoft Exchange Server 2016 Cumulative Update 23, published on 13 Oct 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-2026-70279 in the wild and no public exploit code.\n\nAffected product: Microsoft Exchange Server 2016 Cumulative Update 23. 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-2026-70279/ (Markdown: https://insights.sbomify.com/CVE-2026-70279/index.md)","id":"CVE-2026-70279","markdown":"https://insights.sbomify.com/CVE-2026-70279/index.md","name":"CVE-2026-70279","record":{"aliases":["GHSA-93hh-687q-gjhh"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Exchange Server","requires_auth":"none","summary":"An attacker can perform spoofing attacks against Microsoft Exchange Server users via cross-site scripting vulnerabilities.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[],"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 Exchange Server 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 Exchange Server Spoofing Vulnerability","id":"CVE-2026-70279","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Hello Security Feature Bypass Vulnerability","id":"CVE-2026-70280"},"packages":[],"prev":{"headline":"Microsoft Windows Media Foundation Elevation of Privilege Vulnerability","id":"CVE-2026-70278"},"products":["Microsoft Exchange Server 2016 Cumulative Update 23","Microsoft Exchange Server 2019 Cumulative Update 14","Microsoft Exchange Server 2019 Cumulative Update 15","Microsoft Exchange Server Subscription Edition RTM"],"published":"2026-10-13","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":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Microsoft"]},"summary":"An attacker can perform spoofing attacks against Microsoft Exchange Server users via cross-site scripting vulnerabilities.","url":"https://insights.sbomify.com/CVE-2026-70279/"}