{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-63520 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-63520 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-63520 is a high-severity code injection vulnerability in Microsoft Sharepoint Server, published on 11 Aug 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-2026-63520 and fix it if it is affected.\n\nWhat it is: CVE-2026-63520 is a high-severity code injection vulnerability in Microsoft Sharepoint Server, published on 11 Aug 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-2026-63520 in the wild and no public exploit code.\n\nAffected product: Microsoft Sharepoint Server. 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-2026-63520/ (Markdown: https://insights.sbomify.com/CVE-2026-63520/index.md)","id":"CVE-2026-63520","markdown":"https://insights.sbomify.com/CVE-2026-63520/index.md","name":"CVE-2026-63520","record":{"aliases":["GHSA-cj4w-v2c3-7qjr"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"SharePoint Server","requires_auth":"none","summary":"An unauthorized attacker can execute arbitrary code remotely on Microsoft SharePoint Server due to improper input validation.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"sharepoint_server","vendor":"microsoft"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-26","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-26T16:54:04Z","kind":"github_poc","ref":"https://github.com/hypnguyen1209/CVE-2026-63520","stars":1,"title":"POC pre-auth RCE on Sharepoint chain"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Microsoft SharePoint Server Remote Code Execution Vulnerability","id":"CVE-2026-63520","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:sharepoint_server","products":["microsoft:sharepoint_server"],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Office Word Information Disclosure Vulnerability","id":"CVE-2026-63521"},"packages":[],"prev":{"headline":"Microsoft Office Graphics Component Remote Code Execution Vulnerability","id":"CVE-2026-63519"},"products":["Microsoft SharePoint Enterprise Server 2016","Microsoft SharePoint Server 2019","Microsoft SharePoint Server Subscription Edition"],"published":"2026-08-11","related":[{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data Vulnerability","id":"CVE-2026-50522","kev_date_added":"2026-07-22","published":"2026-07-14"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2026-58644","kev_date_added":"2026-07-16","published":"2026-07-14"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2026-20963","kev_date_added":"2026-03-18","published":"2026-01-13"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Deserialization of Untrusted Data","id":"CVE-2025-53770","kev_date_added":"2025-07-20","published":"2025-07-20"},{"cvss_score":9.8,"headline":"Microsoft SharePoint Server Privilege Escalation","id":"CVE-2023-29357","kev_date_added":"2024-01-10","published":"2023-06-13"},{"cvss_score":9.1,"headline":"Microsoft SharePoint Weak Authentication","id":"CVE-2026-55040","kev_date_added":"2026-08-18","published":"2026-07-14"},{"cvss_score":8.8,"headline":"Microsoft SharePoint Code Injection","id":"CVE-2026-65660","kev_date_added":"2026-09-25","published":"2026-08-11"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-28","vendors":["Microsoft"]},"summary":"An unauthorized attacker can execute arbitrary code remotely on Microsoft SharePoint Server due to improper input validation.","url":"https://insights.sbomify.com/CVE-2026-63520/"}