{"schema_version":"1.9.0","id":"GHSA-7wpj-vvmv-pgm8","published":"2026-07-28T14:44:01Z","modified":"2026-07-28T15:11:50.880711Z","aliases":["CVE-2026-54545"],"summary":"@wakaru/cli arbitrary file write during bundle unpack","details":"### Impact\n\n`@wakaru/cli` is vulnerable to arbitrary file write when unpacking a crafted JavaScript bundle with `--unpack`.\n\nBundle-controlled module filenames were sanitized before writing extracted modules to the output directory. A crafted filename containing overlapping path traversal characters, such as `....//`, could be transformed into `../` after sanitization. This allowed the final output path to escape the intended output directory.\n\nAn attacker who can cause a user to run `wakaru --unpack` on a malicious bundle may be able to write files outside the selected output directory. Depending on the target path and user environment, this may lead to code execution.\n\nAffected versions: `>=1.0.0 <1.4.0`.\n\n### Patches\n\nThe issue has been patched in `@wakaru/cli@1.4.0`.\n\nUsers should upgrade to:\n\n```sh\nnpm install @wakaru/cli@latest\n```\n\nor specifically:\n```\nnpm install @wakaru/cli@1.4.0\n```\n\n### Workarounds\n\nDo not run `wakaru --unpack` on untrusted or unknown bundles with affected versions.\n\nIf upgrading immediately is not possible, avoid using `--unpack on files that may be attacker-controlled.","affected":[{"package":{"name":"@wakaru/cli","ecosystem":"npm","purl":"pkg:npm/%40wakaru/cli"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.0.0"},{"fixed":"1.4.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-7wpj-vvmv-pgm8/GHSA-7wpj-vvmv-pgm8.json"}}],"references":[{"type":"WEB","url":"https://github.com/pionxzh/wakaru/security/advisories/GHSA-7wpj-vvmv-pgm8"},{"type":"WEB","url":"https://github.com/pionxzh/wakaru/commit/1d30383b20a6f768786b8ada2f1b0945de13c316"},{"type":"PACKAGE","url":"https://github.com/pionxzh/wakaru"},{"type":"WEB","url":"https://github.com/pionxzh/wakaru/releases/tag/v1.4.0"}],"database_specific":{"cwe_ids":["CWE-22"],"github_reviewed":true,"github_reviewed_at":"2026-07-28T14:44:01Z","nvd_published_at":null,"severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"}]}