{"id":"CVE-2021-32736","aliases":["EUVD-2021-1494","GHSA-vr5m-3h59-7jcp"],"status":"published","title":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in think-helper","description":"think-helper defines a set of helper functions for ThinkJS. In versions of think-helper prior to 1.1.3, the software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. The vulnerability is patched in version 1.1.3.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01009,"percentile":0.63522,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-915"],"published":"2021-06-30T17:25:09Z","modified":"2026-10-20T10:54:43Z","fixes":[{"ecosystem":"npm","package":"think-helper","fixed_in":["1.1.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"think-helper","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3"}]}]},{"source":"osv","ecosystem":"npm","package":"think-helper","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.1.3"}]}]}],"products":[{"vendor":"thinkjs","product":"think-helper"}],"references":[{"url":"https://github.com/thinkjs/think-helper/security/advisories/GHSA-vr5m-3h59-7jcp","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32736","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vr5m-3h59-7jcp"},{"url":"https://github.com/thinkjs/think-helper","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-32736","title":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in think-helper","description":"think-helper defines a set of helper functions for ThinkJS. In versions of think-helper prior to 1.1.3, the software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. The vulnerability is patched in version 1.1.3.","status":"published","published":"2021-06-30T17:25:09Z","modified":"2024-08-03T23:33:55.799Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-1494","description":"think-helper defines a set of helper functions for ThinkJS. In versions of think-helper prior to 1.1.3, the software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. The vulnerability is patched in version 1.1.3.","status":"published","published":"2021-06-30T17:25:09Z","modified":"2024-08-03T23:33:55Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:35.855495Z"}],"ghsa":[{"id":"GHSA-vr5m-3h59-7jcp","title":"Prototype Pollution in think-helper","description":"### Impact\n\nThe software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.\n\n### Patches\n\n`think-helper@1.1.3` patched it, anyone used `think-helper` should upgrade to `\u003e=1.1.3` version.\n\n### References\n\nhttps://cwe.mitre.org/data/definitions/1321.html\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [thinkjs/thinkjs](https://github.com/thinkjs/thinkjs)\n* Email us at [i@imnerd.org](mailto:i@imnerd.org)\n","status":"published","published":"2021-07-01T17:01:59Z","modified":"2023-02-01T05:05:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-915","CWE-1321"],"updated_at":"2026-11-02T14:36:35.781528Z"}],"nvd":[{"id":"CVE-2021-32736","description":"think-helper defines a set of helper functions for ThinkJS. In versions of think-helper prior to 1.1.3, the software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. The vulnerability is patched in version 1.1.3.","status":"published","published":"2021-06-30T18:15:08.587Z","modified":"2026-06-17T03:53:31.717Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-32736","description":"think-helper defines a set of helper functions for ThinkJS. In versions of think-helper prior to 1.1.3, the software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. The vulnerability is patched in version 1.1.3.","status":"published","published":"2021-06-30T18:15:08.587Z","modified":"2026-10-20T10:54:43.18068585Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"GHSA-vr5m-3h59-7jcp","title":"Prototype Pollution in think-helper","description":"### Impact\n\nThe software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.\n\n### Patches\n\n`think-helper@1.1.3` patched it, anyone used `think-helper` should upgrade to `\u003e=1.1.3` version.\n\n### References\n\nhttps://cwe.mitre.org/data/definitions/1321.html\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [thinkjs/thinkjs](https://github.com/thinkjs/thinkjs)\n* Email us at [i@imnerd.org](mailto:i@imnerd.org)\n","status":"published","published":"2021-07-01T17:01:59Z","modified":"2026-07-08T06:27:44.762801518Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-1321","CWE-915"],"updated_at":"2026-11-02T15:46:57.694388Z"}]}}