{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-77903 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77903 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77903 is a critical authentication bypass vulnerability in Microsoft Dataverse, published on 17 Sep 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-2026-77903 and fix it if it is affected.\n\nWhat it is: CVE-2026-77903 is a critical authentication bypass vulnerability in Microsoft Dataverse, published on 17 Sep 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-2026-77903 in the wild and no public exploit code.\n\nAffected product: Microsoft Dataverse. 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-2026-77903/ (Markdown: https://insights.sbomify.com/CVE-2026-77903/index.md)","id":"CVE-2026-77903","markdown":"https://insights.sbomify.com/CVE-2026-77903/index.md","name":"CVE-2026-77903","record":{"aliases":["GHSA-7f9r-6785-2v6v"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Dataverse","requires_auth":"none","summary":"An attacker can bypass authentication via spoofing to elevate privileges in Microsoft Dataverse, requiring immediate patching.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"dataverse","vendor":"microsoft"}],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges 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 Dataverse Elevation of Privilege Vulnerability","id":"CVE-2026-77903","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Volume Manager Extension Driver Elevation of Privilege Vulnerability","id":"CVE-2026-77904"},"packages":[],"prev":{"headline":"Microsoft Office Excel Remote Code Execution Vulnerability","id":"CVE-2026-77902"},"products":["Microsoft Dataverse"],"published":"2026-09-17","related":[{"cvss_score":9.8,"headline":"Microsoft Dataverse Remote Code Execution Vulnerability","id":"CVE-2026-88131","kev_date_added":null,"published":"2026-10-08"},{"cvss_score":8.7,"headline":"Microsoft Dataverse Remote Code Execution Vulnerability","id":"CVE-2025-47732","kev_date_added":null,"published":"2025-05-08"},{"cvss_score":8.7,"headline":"Microsoft Dataverse Remote Code Execution Vulnerability","id":"CVE-2025-29807","kev_date_added":null,"published":"2025-03-21"},{"cvss_score":8.7,"headline":"Microsoft Dataverse Elevation of Privilege Vulnerability","id":"CVE-2024-38139","kev_date_added":null,"published":"2024-10-15"},{"cvss_score":7.3,"headline":"Microsoft Dataverse Elevation of Privilege Vulnerability","id":"CVE-2025-29826","kev_date_added":null,"published":"2025-05-13"},{"cvss_score":7.2,"headline":"Microsoft Dataverse Elevation of Privilege Vulnerability","id":"CVE-2025-24053","kev_date_added":null,"published":"2025-03-13"}],"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":"2026-10-26","vendors":["Microsoft"]},"summary":"An attacker can bypass authentication via spoofing to elevate privileges in Microsoft Dataverse, requiring immediate patching.","url":"https://insights.sbomify.com/CVE-2026-77903/"}