{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-8400 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-8400 is a high-severity unsafe deserialization vulnerability in Ibm Websphere Application Server, published on 5 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-2026-8400 and fix it if it is affected.\n\nWhat it is: CVE-2026-8400 is a high-severity unsafe deserialization vulnerability in Ibm Websphere Application Server, published on 5 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-2026-8400 in the wild and no public exploit code.\n\nAffected product: Ibm Websphere Application 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-2026-8400/ (Markdown: https://insights.sbomify.com/CVE-2026-8400/index.md)","id":"CVE-2026-8400","markdown":"https://insights.sbomify.com/CVE-2026-8400/index.md","name":"CVE-2026-8400","record":{"aliases":["GHSA-m4rx-9mrh-59g9"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WebSphere Application Server","requires_auth":"none","summary":"A flaw in the IBM Java SDK ORB component allows a malicious IIOP server to trigger arbitrary class instantiation, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[{"product":"websphere_application_server","vendor":"ibm"}],"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","version":"3.1"},"cwes":[{"id":"CWE-470","name":"Use of Externally-Controlled Input to Select Classes or Code"}],"description":"IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Deserialization in WebSphere Application Server","id":"CVE-2026-8400","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"ibm:websphere_application_server","products":["ibm:websphere_application_server"],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Sandbox escape in the Profile Backup component","id":"CVE-2026-8401"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-8399"},"products":["WebSphere Application Server","WebSphere Application Server - Liberty"],"published":"2026-08-05","related":[{"cvss_score":10,"headline":"Code injection in n/a","id":"CVE-2015-1920","kev_date_added":null,"published":"2015-05-20"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2013-0462","kev_date_added":null,"published":"2013-01-27"},{"cvss_score":10,"headline":"Security feature bypass in n/a","id":"CVE-2011-1377","kev_date_added":null,"published":"2012-01-15"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2010-3186","kev_date_added":null,"published":"2010-08-30"},{"cvss_score":10,"headline":"Information disclosure in n/a","id":"CVE-2009-1899","kev_date_added":null,"published":"2009-06-03"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2009-1901","kev_date_added":null,"published":"2009-06-03"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2009-1172","kev_date_added":null,"published":"2009-03-31"}],"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":"2026-08-06","vendors":["IBM"]},"summary":"A flaw in the IBM Java SDK ORB component allows a malicious IIOP server to trigger arbitrary class instantiation, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-8400/"}