{"id":"CVE-2026-15895","aliases":["EUVD-2026-44768","GHSA-h738-vh6g-q8gh","GHSA-wcx4-wpfv-mc5c"],"status":"published","title":"OS command injection in jsii-diff in AWS jsii","description":"OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","severity":{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01081,"percentile":0.65398,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2026-07-15T19:05:30Z","modified":"2026-10-28T02:30:40Z","fixes":[{"ecosystem":"npm","package":"jsii-diff","fixed_in":["1.131.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"jsii-diff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.131.0"}]}]},{"source":"osv","ecosystem":"npm","package":"jsii-diff","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.131.0"}]}]}],"products":[{"vendor":"aws","product":"jsii"}],"references":[{"url":"https://github.com/aws/jsii/releases/tag/v1.131.0","tags":["release-notes","patch","fix","web"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-057-aws/","tags":["vendor-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15895","tags":["advisory"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-057-aws","tags":["web"]},{"url":"https://github.com/advisories/GHSA-h738-vh6g-q8gh"},{"url":"https://github.com/aws/jsii/security/advisories/GHSA-wcx4-wpfv-mc5c","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wcx4-wpfv-mc5c"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15895.json","tags":["advisory"]},{"url":"https://github.com/aws/jsii","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-15895","title":"OS command injection in jsii-diff in AWS jsii","description":"OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"published","published":"2026-07-15T19:05:30.204Z","modified":"2026-07-15T19:21:30.087Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:47:51.033687Z"}],"euvd":[{"id":"EUVD-2026-44768","description":"OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"published","published":"2026-07-15T19:05:30Z","modified":"2026-07-15T19:21:30Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:19:52.35951Z"}],"ghsa":[{"id":"GHSA-h738-vh6g-q8gh","title":"Duplicate Advisory: Command Injection in jsii-diff via npm: package argument","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-wcx4-wpfv-mc5c. This link is maintained to preserve external references.\n\n### Original Description\nOS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"withdrawn","published":"2026-07-15T21:31:22Z","modified":"2026-08-07T18:15:41Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:40:57.999375Z"},{"id":"GHSA-wcx4-wpfv-mc5c","title":"jsii-diff: Command Injection via npm: package argument","description":"## Summary\n\njsii-diff is a command line tool to compare the API differences between two jsii assemblies, and report errors if there are backwards-incompatible changes to the API. An issue exists where specially formatted command line arguments can be used to execute shell commands via this tool.\n\n## Impact\njsii-diff supports downloading packages to compare directly from NPM, so that you can compare a proposed candidate version of your jsii package with an already-published version, by passing an argument that looks like `npm:\u003cpackage-specifier\u003e`. For example:\n\n```\njsii-diff npm:my-package@latest .\n```\n\nBy injecting a `;` into the `package-specifier` part of that command, jsii-diff can be tricked into running shell commands. For example:\n\n```\njsii-diff \"npm:lodash; touch /tmp/123\" .\n```\n\nThis allows anyone that can control the command-line arguments to jsii-diff to run arbitrary commands with the same permissions as the jsii-diff command itself.\n\n## Patches\nThis issue has been addressed in jsii-diff version 1.131.0. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\n## Workarounds\nIf you are unable to update, make sure only trusted actors can control the arguments passed to jsii-diff.\n\n## References\nIf you have any questions or comments about this advisory, AWS asks that you contact AWS Security via the [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.","status":"published","published":"2026-08-07T18:15:47Z","modified":"2026-08-07T18:15:49Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:40:57.999375Z"}],"nvd":[{"id":"CVE-2026-15895","description":"OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"published","published":"2026-07-15T19:16:58.693Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:29.879716Z"}],"osv":[{"id":"CVE-2026-15895","title":"OS command injection in jsii-diff in AWS jsii","description":"OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"published","published":"2026-07-15T19:05:30.204Z","modified":"2026-10-28T02:30:40.009801396Z","cvss":[{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:44:57.682091Z"},{"id":"GHSA-h738-vh6g-q8gh","title":"Duplicate Advisory: Command Injection in jsii-diff via npm: package argument","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-wcx4-wpfv-mc5c. This link is maintained to preserve external references.\n\n### Original Description\nOS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.\n\n\n\nTo mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.","status":"withdrawn","published":"2026-07-15T21:31:22Z","modified":"2026-08-07T18:31:29.647358331Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"GHSA-wcx4-wpfv-mc5c","title":"jsii-diff: Command Injection via npm: package argument","description":"## Summary\n\njsii-diff is a command line tool to compare the API differences between two jsii assemblies, and report errors if there are backwards-incompatible changes to the API. An issue exists where specially formatted command line arguments can be used to execute shell commands via this tool.\n\n## Impact\njsii-diff supports downloading packages to compare directly from NPM, so that you can compare a proposed candidate version of your jsii package with an already-published version, by passing an argument that looks like `npm:\u003cpackage-specifier\u003e`. For example:\n\n```\njsii-diff npm:my-package@latest .\n```\n\nBy injecting a `;` into the `package-specifier` part of that command, jsii-diff can be tricked into running shell commands. For example:\n\n```\njsii-diff \"npm:lodash; touch /tmp/123\" .\n```\n\nThis allows anyone that can control the command-line arguments to jsii-diff to run arbitrary commands with the same permissions as the jsii-diff command itself.\n\n## Patches\nThis issue has been addressed in jsii-diff version 1.131.0. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\n## Workarounds\nIf you are unable to update, make sure only trusted actors can control the arguments passed to jsii-diff.\n\n## References\nIf you have any questions or comments about this advisory, AWS asks that you contact AWS Security via the [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.","status":"published","published":"2026-08-07T18:15:47Z","modified":"2026-08-07T18:41:00.528075Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:58.401149Z"}]}}