{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121941 exists.","exposure":"","fix":"No fix has been published for CVE-2026-121941 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-121941 is a high-severity vulnerability in munt libmt32emu, published on 4 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-121941 and fix it if it is affected.\n\nWhat it is: CVE-2026-121941 is a high-severity vulnerability in munt libmt32emu, published on 4 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121941 exists.\n\nAffected product: munt libmt32emu. 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-2026-121941/ (Markdown: https://insights.sbomify.com/CVE-2026-121941/index.md)","id":"CVE-2026-121941","markdown":"https://insights.sbomify.com/CVE-2026-121941/index.md","name":"CVE-2026-121941","record":{"aliases":["GHSA-qw3h-2hqv-29vq"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"libmt32emu before 2.8.4 contains a heap buffer overflow vulnerability in MidiStreamParserImpl::parseSysex that allows attackers to write past a heap allocation by supplying oversized unterminated SysEx messages. Attackers can feed more than 32768 SysEx data bytes through the mt32emu_parse_stream API via MIDI files, ports, or sequencer clients to corrupt heap memory and crash the application.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"libmt32emu before 2.8.4 Heap Buffer Overflow via MidiStreamParserImpl::parseSysex","id":"CVE-2026-121941","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"ZBar through 0.23.95 Out-of-Bounds Read via _zbar_sq_decode() in sqcode.c","id":"CVE-2026-121942"},"nickname":null,"packages":[],"prev":{"headline":"Stonewuu ai-fusion-video before 1.3.0 IDOR via Project, Asset and Script Controllers","id":"CVE-2026-121940"},"products":["libmt32emu"],"published":"2026-11-04","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-04","vendors":["munt"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-121941/"}