{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55894 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-55894 is a medium-severity denial of service vulnerability in capstone-engine capstone, published on 20 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-55894 and fix it if it is affected.\n\nWhat it is: CVE-2026-55894 is a medium-severity denial of service vulnerability in capstone-engine capstone, published on 20 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55894 exists.\n\nAffected product: capstone-engine capstone. 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-2026-55894/ (Markdown: https://insights.sbomify.com/CVE-2026-55894/index.md)","id":"CVE-2026-55894","markdown":"https://insights.sbomify.com/CVE-2026-55894/index.md","name":"CVE-2026-55894","record":{"aliases":["AZL-96891","AZL-97413","BELL-CVE-2026-55894","DEBIAN-CVE-2026-55894","GHSA-gf2c-xwcp-hvf4","UBUNTU-CVE-2026-55894"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Capstone disassembly framework","requires_auth":"none","summary":"Crafted SH2A bytecode causes an out-of-bounds read in the Capstone SH disassembler, leading to a segmentation fault and denial of service.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c sh_disassemble() function computes an idx value from a raw 16-bit instruction without ensuring it is within the active mode-specific decode[] function-pointer table. An application using CS_ARCH_SH with CS_MODE_SH2A or CS_MODE_SH4A and CS_MODE_SHFPU can pass crafted bytecode through cs_disasm_iter() or cs_disasm(), causing the decode[idx] test to read outside the table and terminate the process with a segmentation fault. No code execution or information disclosure was demonstrated. This issue is fixed in version 6.0.0-Alpha10.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Capstone SH disassembler `sh_disassemble` out-of-bounds read via crafted SH2A bytecode","id":"CVE-2026-55894","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Vim: Vimscript Code Injection in netrw NetrwLocalRmFile() via crafted filename","id":"CVE-2026-55895"},"packages":[],"prev":{"headline":"Capstone SH disassembler `set_reg_n` heap buffer overflow via crafted SH2A FPU bytecode","id":"CVE-2026-55893"},"products":["capstone"],"published":"2026-08-20","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":"partial"},"state":"PUBLISHED","updated":"2026-08-21","vendors":["capstone-engine"]},"summary":"Crafted SH2A bytecode causes an out-of-bounds read in the Capstone SH disassembler, leading to a segmentation fault and denial of service.","url":"https://insights.sbomify.com/CVE-2026-55894/"}