{"answers":{"affected":"2 open source packages ship an affected version, including deno. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-22864 in the wild and no public exploit code.","fix":"Upgrade deno to 2.5.6 or later.","what":"CVE-2026-22864 is a high-severity command injection vulnerability in denoland deno, published on 15 Jan 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-2026-22864 and fix it if it is affected.\n\nWhat it is: CVE-2026-22864 is a high-severity command injection vulnerability in denoland deno, published on 15 Jan 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-2026-22864 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- deno (crates.io): affected all versions; fixed in 2.5.6\n- deno (crates.io): affected all versions; fixed in 2.5.6\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-2026-22864/ (Markdown: https://insights.sbomify.com/CVE-2026-22864/index.md)","id":"CVE-2026-22864","markdown":"https://insights.sbomify.com/CVE-2026-22864/index.md","name":"CVE-2026-22864","record":{"aliases":["GHSA-m3c4-prhw-mrx6","JLSEC-2026-115"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Deno runtime","requires_auth":"none","summary":"Attackers can bypass command injection protections in Deno on Windows by using case-insensitive file extensions to execute arbitrary commands.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"deno","vendor":"deno"}],"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-77","name":"Improper Neutralization of Special Elements used in a Command"}],"description":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.5.6, a prior patch aimed to block spawning Windows batch/shell files by returning an error when a spawned path’s extension matched .bat or .cmd. That check performs a case-sensitive comparison against lowercase literals and therefore can be bypassed when the extension uses alternate casing (for example .BAT, .Bat, etc.). This vulnerability is fixed in 2.5.6.","ecosystems":["crates.io"],"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":"Deno has an incomplete fix for command-injection prevention on Windows — case-insensitive extension bypass","id":"CVE-2026-22864","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Gradle's failure to disable repositories failing to answer can expose builds to malicious artifacts","id":"CVE-2026-22865"},"packages":[{"ecosystem":"crates.io","fixed":["2.5.6"],"introduced":["0"],"last_affected":[],"package":"deno","purl":null,"source":"GHSA-m3c4-prhw-mrx6"},{"ecosystem":"crates.io","fixed":["2.5.6"],"introduced":["0"],"last_affected":[],"package":"deno","purl":"pkg:cargo/deno","source":"GHSA-m3c4-prhw-mrx6"}],"prev":{"headline":"Deno node:crypto doesn't finalize cipher","id":"CVE-2026-22863"},"products":["deno"],"published":"2026-01-15","related":[{"cvss_score":10,"headline":"Deno improperly handles resizable ArrayBuffer","id":"CVE-2023-28445","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":10,"headline":"Sandbox bypass leading to arbitrary code execution in Deno","id":"CVE-2022-24783","kev_date_added":null,"published":"2022-03-25"},{"cvss_score":9.8,"headline":"Static imports inside dynamically imported modules do not adhere to permission checks","id":"CVE-2021-32619","kev_date_added":null,"published":"2021-05-28"},{"cvss_score":9.2,"headline":"Deno node:crypto doesn't finalize cipher","id":"CVE-2026-22863","kev_date_added":null,"published":"2026-01-15"},{"cvss_score":8.8,"headline":"Deno interactive permission prompt spoofing via improper ANSI stripping","id":"CVE-2024-27936","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":8.8,"headline":"Deno is vulnerable to interactive `run` permission prompt spoofing via improper ANSI neutralization","id":"CVE-2023-28446","kev_date_added":null,"published":"2023-03-24"},{"cvss_score":8.6,"headline":"Deno missing \"--allow-net\" permission check for built-in Node modules","id":"CVE-2023-33966","kev_date_added":null,"published":"2023-05-31"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-01-16","vendors":["denoland"]},"summary":"Attackers can bypass command injection protections in Deno on Windows by using case-insensitive file extensions to execute arbitrary commands.","url":"https://insights.sbomify.com/CVE-2026-22864/"}