{"id":"CVE-2023-0163","aliases":["EUVD-2023-0329","GHSA-4jrm-c32x-w4jf"],"status":"published","title":"Prototype Pollution in convict","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.\n\nThis allows an attacker to inject attributes that are used in other components, or to override existing attributes with ones that have incompatible type, which may lead to a crash.\n\n\nThe main use case of Convict is for handling server-side \nconfigurations written by the admins owning the servers, and not random \nusers. So it's unlikely that an admin would deliberately sabotage their \nown server. Still, a situation can happen where an admin not \nknowledgeable about JavaScript could be tricked by an attacker into \nwriting the malicious JavaScript code into some config files.\n\n\n\nThis issue affects Convict: before 6.2.4.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00274,"percentile":0.19866,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2023-01-10T21:50:00Z","modified":"2026-10-28T02:30:24Z","fixes":[{"ecosystem":"npm","package":"convict","fixed_in":["6.2.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"convict","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.4"}]}]},{"source":"osv","ecosystem":"npm","package":"convict","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.2.4"}]}]}],"products":[{"vendor":"mozilla","product":"convict"}],"references":[{"url":"https://github.com/mozilla/node-convict/issues/410","tags":["issue-tracking","Exploit","Issue Tracking","report","web"]},{"url":"https://github.com/mozilla/node-convict/security/advisories/GHSA-4jrm-c32x-w4jf","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/mozilla/node-convict/commit/fb602fbe1e9f14f2e88ecb8179d0f76466d21ecb","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0163","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4jrm-c32x-w4jf"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0163.json","tags":["advisory"]},{"url":"https://github.com/mozilla/node-convict","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-0163","title":"Prototype Pollution in convict","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.\n\nThis allows an attacker to inject attributes that are used in other components, or to override existing attributes with ones that have incompatible type, which may lead to a crash.\n\n\nThe main use case of Convict is for handling server-side \nconfigurations written by the admins owning the servers, and not random \nusers. So it's unlikely that an admin would deliberately sabotage their \nown server. Still, a situation can happen where an admin not \nknowledgeable about JavaScript could be tricked by an attacker into \nwriting the malicious JavaScript code into some config files.\n\n\n\nThis issue affects Convict: before 6.2.4.","status":"published","published":"2024-11-26T11:36:26.574Z","modified":"2024-11-27T16:02:29.836Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:35:35.580545Z"}],"euvd":[{"id":"EUVD-2023-0329","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.\n\nThis allows an attacker to inject attributes that are used in other components, or to override existing attributes with ones that have incompatible type, which may lead to a crash.\n\n\nThe main use case of Convict is for handling server-side \nconfigurations written by the admins owning the servers, and not random \nusers. So it's unlikely that an admin would deliberately sabotage their \nown server. Still, a situation can happen where an admin not \nknowledgeable about JavaScript could be tricked by an attacker into \nwriting the malicious JavaScript code into some config files.\n\n\n\nThis issue affects Convict: before 6.2.4.","status":"published","published":"2024-11-26T11:36:26Z","modified":"2024-11-27T16:02:29Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:45.657538Z"}],"ghsa":[{"id":"GHSA-4jrm-c32x-w4jf","title":"convict vulnerable to Prototype Pollution","description":"### Impact\n\n* An attacker can inject attributes that are used in other components\n* An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.\n\nThe main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.\n\n### Patches\nThe problem is patched in `convict@6.2.4`. Users should upgrade to `convict@6.2.4`.\n\n### Workarounds\nNo way for users to fix or remediate the vulnerability without upgrading\n\n### References\nhttps://github.com/mozilla/node-convict/issues/410\n","status":"published","published":"2023-01-10T21:50:00Z","modified":"2024-11-26T18:58:55Z","cvss":[{"version":"4.0","score":7.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:38:23.575854Z"}],"nvd":[{"id":"CVE-2023-0163","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.\n\nThis allows an attacker to inject attributes that are used in other components, or to override existing attributes with ones that have incompatible type, which may lead to a crash.\n\n\nThe main use case of Convict is for handling server-side \nconfigurations written by the admins owning the servers, and not random \nusers. So it's unlikely that an admin would deliberately sabotage their \nown server. Still, a situation can happen where an admin not \nknowledgeable about JavaScript could be tricked by an attacker into \nwriting the malicious JavaScript code into some config files.\n\n\n\nThis issue affects Convict: before 6.2.4.","status":"published","published":"2024-11-26T12:15:17.39Z","modified":"2026-06-17T05:24:55.913Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:09:19.052418Z"}],"osv":[{"id":"CVE-2023-0163","title":"Prototype Pollution in convict","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.\n\nThis allows an attacker to inject attributes that are used in other components, or to override existing attributes with ones that have incompatible type, which may lead to a crash.\n\n\nThe main use case of Convict is for handling server-side \nconfigurations written by the admins owning the servers, and not random \nusers. So it's unlikely that an admin would deliberately sabotage their \nown server. Still, a situation can happen where an admin not \nknowledgeable about JavaScript could be tricked by an attacker into \nwriting the malicious JavaScript code into some config files.\n\n\n\nThis issue affects Convict: before 6.2.4.","status":"published","published":"2024-11-26T11:36:26.574Z","modified":"2026-10-28T02:30:24.985244204Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:44:29.487253Z"},{"id":"GHSA-4jrm-c32x-w4jf","title":"convict vulnerable to Prototype Pollution","description":"### Impact\n\n* An attacker can inject attributes that are used in other components\n* An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.\n\nThe main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.\n\n### Patches\nThe problem is patched in `convict@6.2.4`. Users should upgrade to `convict@6.2.4`.\n\n### Workarounds\nNo way for users to fix or remediate the vulnerability without upgrading\n\n### References\nhttps://github.com/mozilla/node-convict/issues/410\n","status":"published","published":"2023-01-10T21:50:00Z","modified":"2024-11-26T18:58:52Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":7.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:37.148947Z"}]}}