{"answers":{"affected":"2 open source packages ship an affected version, including deno. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49402 exists.","fix":"Upgrade deno to 2.7.10 or later.","what":"CVE-2026-49402 is a high-severity command injection vulnerability in denoland deno, published on 23 Jun 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-2026-49402 and fix it if it is affected.\n\nWhat it is: CVE-2026-49402 is a high-severity command injection vulnerability in denoland deno, published on 23 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49402 exists.\n\nAffected packages and fixed versions:\n- deno (crates.io): affected all versions; fixed in 2.7.10\n- deno (crates.io): affected all versions; fixed in 2.7.10\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-2026-49402/ (Markdown: https://insights.sbomify.com/CVE-2026-49402/index.md)","id":"CVE-2026-49402","markdown":"https://insights.sbomify.com/CVE-2026-49402/index.md","name":"CVE-2026-49402","record":{"aliases":["GHSA-7xh3-mhg9-jcw8","JLSEC-2026-656"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Deno runtime","requires_auth":"none","summary":"Attackers can execute arbitrary commands on Windows by exploiting improper argument quoting in Deno's child_process module when shell mode is enabled.","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-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.10, Deno's node:child_process implementation provided an escapeShellArg() helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters and did not neutralize % (which cmd.exe expands even inside double-quoted strings). An attacker who controlled any portion of an argument passed to such a call could inject arbitrary additional commands into the spawned cmd.exe invocation. This vulnerability is fixed in 2.7.10.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Deno: Command Injection via spawnSync \u0026 spawn on Windows","id":"CVE-2026-49402","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Deno: BYONM module resolution allows `package.json` main path traversal to bypass `--allow-read` restrictions","id":"CVE-2026-49406"},"packages":[{"ecosystem":"crates.io","fixed":["2.7.10"],"introduced":["0"],"last_affected":[],"package":"deno","purl":null,"source":"GHSA-7xh3-mhg9-jcw8"},{"ecosystem":"crates.io","fixed":["2.7.10"],"introduced":["0"],"last_affected":[],"package":"deno","purl":"pkg:cargo/deno","source":"GHSA-7xh3-mhg9-jcw8"}],"prev":{"headline":"Deno Permission Bypass via Unicode Normalization Mismatch on macOS (APFS)","id":"CVE-2026-49401"},"products":["deno"],"published":"2026-06-23","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-25","vendors":["denoland"]},"summary":"Attackers can execute arbitrary commands on Windows by exploiting improper argument quoting in Deno's child_process module when shell mode is enabled.","url":"https://insights.sbomify.com/CVE-2026-49402/"}