{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-11728 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-11728 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-11728 is a high-severity memory corruption vulnerability in IBM MQ, published on 15 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-2026-11728 and fix it if it is affected.\n\nWhat it is: CVE-2026-11728 is a high-severity memory corruption vulnerability in IBM MQ, published on 15 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-2026-11728 in the wild and no public exploit code.\n\nAffected product: IBM MQ. 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-2026-11728/ (Markdown: https://insights.sbomify.com/CVE-2026-11728/index.md)","id":"CVE-2026-11728","markdown":"https://insights.sbomify.com/CVE-2026-11728/index.md","name":"CVE-2026-11728","record":{"aliases":["GHSA-2jc4-fc4x-rj9r"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"IBM MQ .NET client","requires_auth":"none","summary":"A heap buffer overflow in the IBM MQ .NET client allows remote attackers to execute arbitrary code or cause denial of service via malicious messages.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[],"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-787","name":"Out-of-bounds Write"}],"description":"IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow a remote attacker to cause a denial of service or potentially execute arbitrary code in the client due to a heap buffer overflow when receiving messages from a malicious queue manager or through a man-in-the-middle attack.","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":"IBM MQ .NET client is vulnerable to remote code execution","id":"CVE-2026-11728","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"IBM MQ Java messaging is vulnerable to remote code execution","id":"CVE-2026-11729"},"packages":[],"prev":{"headline":"IBM MQ for HPE NonStop is vulnerable to a denial of service issue","id":"CVE-2026-11727"},"products":["MQ"],"published":"2026-09-15","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":"2026-09-16","vendors":["IBM"]},"summary":"A heap buffer overflow in the IBM MQ .NET client allows remote attackers to execute arbitrary code or cause denial of service via malicious messages.","url":"https://insights.sbomify.com/CVE-2026-11728/"}