{"id":"CVE-2026-48795","aliases":["EUVD-2026-44822","GHSA-qcm7-3vpr-hj5h"],"status":"published","title":"Incomplete fix for CVE-2026-25754 in @adonisjs/bodyparser","description":"AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prototype still caused lodash _.set() via @poppinss/utils to create plain intermediate objects and pollute Object.prototype. This issue is fixed in versions 10.1.5 and 11.0.3.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00547,"percentile":0.46095,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2026-06-30T18:34:32Z","modified":"2026-10-28T02:31:01Z","fixes":[{"ecosystem":"npm","package":"@adonisjs/bodyparser","fixed_in":["10.1.5","11.0.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@adonisjs/bodyparser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.1.3"},{"last_affected":"10.1.4"},{"fixed":"10.1.5"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@adonisjs/bodyparser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0-next.9"},{"last_affected":"11.0.1"},{"fixed":"11.0.3"}]}]},{"source":"osv","ecosystem":"npm","package":"@adonisjs/bodyparser","ranges":[{"type":"SEMVER","events":[{"introduced":"10.1.3"},{"fixed":"10.1.5"}]}]},{"source":"osv","ecosystem":"npm","package":"@adonisjs/bodyparser","ranges":[{"type":"SEMVER","events":[{"introduced":"11.0.0-next.9"},{"fixed":"11.0.3"}]}]}],"products":[{"vendor":"adonisjs","product":"core"},{"vendor":"opnsense","product":"core"}],"references":[{"url":"https://github.com/adonisjs/core/security/advisories/GHSA-qcm7-3vpr-hj5h","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/adonisjs/bodyparser/commit/8a85eb0c2061b0caca10faedbfc2cf24b56cf9f6","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/adonisjs/bodyparser/commit/aa96908f7b3f64c19e15d2d2d916b69137bdf469","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/adonisjs/bodyparser/releases/tag/v10.1.5","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/adonisjs/bodyparser/releases/tag/v11.0.3","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c","tags":["web"]},{"url":"https://github.com/adonisjs/bodyparser/commit/40e1c71f958cffb74f6b91bed6630dca979062ed","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qcm7-3vpr-hj5h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48795.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48795","tags":["advisory"]},{"url":"https://github.com/adonisjs/core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-48795","title":"Incomplete fix for CVE-2026-25754 in @adonisjs/bodyparser","description":"AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prototype still caused lodash _.set() via @poppinss/utils to create plain intermediate objects and pollute Object.prototype. This issue is fixed in versions 10.1.5 and 11.0.3.","status":"published","published":"2026-07-15T21:23:14.393Z","modified":"2026-07-16T18:49:54.392Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:19:47.998488Z"}],"euvd":[{"id":"EUVD-2026-44822","description":"AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prototype still caused lodash _.set() via @poppinss/utils to create plain intermediate objects and pollute Object.prototype. This issue is fixed in versions 10.1.5 and 11.0.3.","status":"published","published":"2026-07-15T21:23:14Z","modified":"2026-07-16T18:49:54Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T18:19:51.364603Z"}],"ghsa":[{"id":"GHSA-qcm7-3vpr-hj5h","title":"@adonisjs/bodyparser has an incomplete fix for CVE-2026-25754","description":"### Summary\n\nThe fix for [GHSA-f5x2-vj4h-vg4c](https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c) / CVE-2026-25754 introduced in commit [`40e1c71`](https://github.com/adonisjs/bodyparser/commit/40e1c71f958cffb74f6b91bed6630dca979062ed) is incomplete and can be bypassed through nested prototype pollution payloads.\n\nThe original patch replaced the internal `FormFields` storage object with `Object.create(null)`, preventing direct payloads such as `__proto__.polluted`. However, payloads containing a non-dangerous segment before `__proto__` or `constructor.prototype`, such as `user.__proto__.polluted`, still lead to `Object.prototype` pollution.\n\nThis issue is exploitable remotely through a single unauthenticated `multipart/form-data` request using the default configuration.\n\n### Affected versions\n\n- `\u003e= 10.1.3 \u003c 10.1.5`\n- `\u003e= 11.0.0-next.9 \u003c 11.0.3`\n\n### Details\n\nThe regression tests added by the original fix only covered direct payloads such as:\n\n- `__proto__.polluted`\n- `constructor.prototype.polluted`\n\nThese payloads are blocked because the root object no longer inherits from `Object.prototype`.\n\nHowever, lodash `_.set()` (via `@poppinss/utils`) still creates intermediate objects using plain `{}` values. Once a normal segment is encountered, subsequent `__proto__` or `constructor.prototype` segments regain access to `Object.prototype`.\n\n### Impact\n\nAn unauthenticated attacker can remotely pollute `Object.prototype` on any route accepting multipart/form-data requests behind `BodyParserMiddleware`.\n\nBecause the pollution is process-wide, the impact may include authorization bypasses, unexpected behavior in downstream libraries, or prototype pollution gadget chains leading to remote code execution.\n\n### Patches\n\nFixes targeting v6 and v7 have been published below.\n\nUsers should upgrade to a version that includes the following fix:\n\n- https://github.com/adonisjs/bodyparser/releases/tag/v10.1.5\n- https://github.com/adonisjs/bodyparser/releases/tag/v11.0.3\n\n### References\n\n- [CWE-1321](https://cwe.mitre.org/data/definitions/1321.html)\n- Prior advisory this bypasses: [GHSA-f5x2-vj4h-vg4c](https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c) / CVE-2026-25754","status":"published","published":"2026-06-30T18:34:32Z","modified":"2026-06-30T18:34:33Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:40:35.701766Z"}],"nvd":[{"id":"CVE-2026-48795","description":"AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prototype still caused lodash _.set() via @poppinss/utils to create plain intermediate objects and pollute Object.prototype. This issue is fixed in versions 10.1.5 and 11.0.3.","status":"published","published":"2026-07-15T22:16:50.383Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:12:30.250437Z"}],"osv":[{"id":"CVE-2026-48795","title":"Incomplete fix for CVE-2026-25754 in @adonisjs/bodyparser","description":"AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prototype still caused lodash _.set() via @poppinss/utils to create plain intermediate objects and pollute Object.prototype. This issue is fixed in versions 10.1.5 and 11.0.3.","status":"published","published":"2026-07-15T21:23:14.393Z","modified":"2026-10-28T02:31:01.283204315Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:45:06.701612Z"},{"id":"GHSA-qcm7-3vpr-hj5h","title":"@adonisjs/bodyparser has an incomplete fix for CVE-2026-25754","description":"### Summary\n\nThe fix for [GHSA-f5x2-vj4h-vg4c](https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c) / CVE-2026-25754 introduced in commit [`40e1c71`](https://github.com/adonisjs/bodyparser/commit/40e1c71f958cffb74f6b91bed6630dca979062ed) is incomplete and can be bypassed through nested prototype pollution payloads.\n\nThe original patch replaced the internal `FormFields` storage object with `Object.create(null)`, preventing direct payloads such as `__proto__.polluted`. However, payloads containing a non-dangerous segment before `__proto__` or `constructor.prototype`, such as `user.__proto__.polluted`, still lead to `Object.prototype` pollution.\n\nThis issue is exploitable remotely through a single unauthenticated `multipart/form-data` request using the default configuration.\n\n### Affected versions\n\n- `\u003e= 10.1.3 \u003c 10.1.5`\n- `\u003e= 11.0.0-next.9 \u003c 11.0.3`\n\n### Details\n\nThe regression tests added by the original fix only covered direct payloads such as:\n\n- `__proto__.polluted`\n- `constructor.prototype.polluted`\n\nThese payloads are blocked because the root object no longer inherits from `Object.prototype`.\n\nHowever, lodash `_.set()` (via `@poppinss/utils`) still creates intermediate objects using plain `{}` values. Once a normal segment is encountered, subsequent `__proto__` or `constructor.prototype` segments regain access to `Object.prototype`.\n\n### Impact\n\nAn unauthenticated attacker can remotely pollute `Object.prototype` on any route accepting multipart/form-data requests behind `BodyParserMiddleware`.\n\nBecause the pollution is process-wide, the impact may include authorization bypasses, unexpected behavior in downstream libraries, or prototype pollution gadget chains leading to remote code execution.\n\n### Patches\n\nFixes targeting v6 and v7 have been published below.\n\nUsers should upgrade to a version that includes the following fix:\n\n- https://github.com/adonisjs/bodyparser/releases/tag/v10.1.5\n- https://github.com/adonisjs/bodyparser/releases/tag/v11.0.3\n\n### References\n\n- [CWE-1321](https://cwe.mitre.org/data/definitions/1321.html)\n- Prior advisory this bypasses: [GHSA-f5x2-vj4h-vg4c](https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c) / CVE-2026-25754","status":"published","published":"2026-06-30T18:34:32Z","modified":"2026-09-10T03:50:50.187122134Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:54.40888Z"}]}}