{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-6721 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-6721 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-6721 is a critical command injection vulnerability in Ibm Concert, published on 23 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-2026-6721 and fix it if it is affected.\n\nWhat it is: CVE-2026-6721 is a critical command injection vulnerability in Ibm Concert, published on 23 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-2026-6721 in the wild and no public exploit code.\n\nAffected product: Ibm Concert. 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-2026-6721/ (Markdown: https://insights.sbomify.com/CVE-2026-6721/index.md)","id":"CVE-2026-6721","markdown":"https://insights.sbomify.com/CVE-2026-6721/index.md","name":"CVE-2026-6721","record":{"aliases":["GHSA-v72j-hv4w-mxvh"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"IBM Concert software","requires_auth":"none","summary":"Unauthenticated remote attackers can execute arbitrary OS commands via crafted input in IBM Concert, leading to remote code execution.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[{"product":"concert","vendor":"ibm"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"IBM Concert 1.0.0 through 3.0.0 allows an unauthenticated remote attacker can supply specially crafted input that is incorporated into OS commands, resulting in arbitrary command execution on the underlying system. Successful exploitation allows remote code execution with the privileges of the affected application.","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":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-6721","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"ibm:concert","products":["ibm:concert"],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Use-After-Free in SOAP using Apache map","id":"CVE-2026-6722"},"packages":[],"prev":{"headline":"Calicoctl leaks cluster credentials to stderr when verbose logging is enabled","id":"CVE-2026-6720"},"products":["Concert"],"published":"2026-09-23","related":[{"cvss_score":9.8,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-6730","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":9.8,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-6928","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":9.1,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-3627","kev_date_added":null,"published":"2026-08-28"},{"cvss_score":8.8,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2025-33015","kev_date_added":null,"published":"2026-01-20"},{"cvss_score":7.8,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-6794","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":7.8,"headline":"Multiple Vulnerabilities in IBM Concert Software","id":"CVE-2026-6935","kev_date_added":null,"published":"2026-09-23"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-25","vendors":["IBM"]},"summary":"Unauthenticated remote attackers can execute arbitrary OS commands via crafted input in IBM Concert, leading to remote code execution.","url":"https://insights.sbomify.com/CVE-2026-6721/"}