{"url":"http://public2.vulnerablecode.io/api/packages/274235?format=json","purl":"pkg:npm/hellojs@0.2.3","type":"npm","namespace":"","name":"hellojs","version":"0.2.3","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"1.18.8","latest_non_vulnerable_version":"2.0.0-2","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/45826?format=json","vulnerability_id":"VCID-aggf-krtn-2bez","summary":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')\nPrototype pollution vulnerability in MrSwitch hello.js version 1.18.6, allows remote attackers to execute arbitrary code via hello.utils.extend function.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-26505","reference_id":"","reference_type":"","scores":[{"value":"0.01669","scoring_system":"epss","scoring_elements":"0.82448","published_at":"2026-06-04T12:55:00Z"},{"value":"0.01669","scoring_system":"epss","scoring_elements":"0.82476","published_at":"2026-06-06T12:55:00Z"},{"value":"0.01669","scoring_system":"epss","scoring_elements":"0.82478","published_at":"2026-06-05T12:55:00Z"},{"value":"0.01684","scoring_system":"epss","scoring_elements":"0.82576","published_at":"2026-06-09T12:55:00Z"},{"value":"0.01684","scoring_system":"epss","scoring_elements":"0.82569","published_at":"2026-06-07T12:55:00Z"},{"value":"0.01684","scoring_system":"epss","scoring_elements":"0.82563","published_at":"2026-06-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-26505"},{"reference_url":"https://github.com/MrSwitch/hello.js","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/MrSwitch/hello.js"},{"reference_url":"https://github.com/MrSwitch/hello.js/commit/7ab50aeff2d41991f08d4ad6c0481125eea8f6b7","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/MrSwitch/hello.js/commit/7ab50aeff2d41991f08d4ad6c0481125eea8f6b7"},{"reference_url":"https://github.com/MrSwitch/hello.js/issues/634","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track*","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2024-10-09T17:48:08Z/"}],"url":"https://github.com/MrSwitch/hello.js/issues/634"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26505","reference_id":"CVE-2021-26505","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26505"},{"reference_url":"https://github.com/advisories/GHSA-g3vf-47fv-8f3c","reference_id":"GHSA-g3vf-47fv-8f3c","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-g3vf-47fv-8f3c"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/66537?format=json","purl":"pkg:npm/hellojs@1.18.8","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/hellojs@1.18.8"}],"aliases":["CVE-2021-26505","GHSA-g3vf-47fv-8f3c"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-aggf-krtn-2bez"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/53680?format=json","vulnerability_id":"VCID-vd4u-ed81-myar","summary":"Cross-site Scripting\nThis affects the package hellojs. The code get the param `oauth_redirect` from url and pass it to `location.assign` without any check and sanitisation. So we can simply pass some XSS payloads into the url param `oauth_redirect`, such as `javascript:alert(1)`.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-7741","reference_id":"","reference_type":"","scores":[{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.67087","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.67102","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.6712","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.67112","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.67071","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00517","scoring_system":"epss","scoring_elements":"0.67104","published_at":"2026-06-07T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-7741"},{"reference_url":"https://github.com/MrSwitch/hello.js/blob/3b79ec93781b3d7b9c0b56f598e060301d1f3e73/dist/hello.all.js%23L1545","reference_id":"","reference_type":"","scores":[{"value":"9.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/MrSwitch/hello.js/blob/3b79ec93781b3d7b9c0b56f598e060301d1f3e73/dist/hello.all.js%23L1545"},{"reference_url":"https://github.com/MrSwitch/hello.js/commit/d6f5137f30de6e0ef7048191ee6ae575fdc2f669","reference_id":"","reference_type":"","scores":[{"value":"9.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/MrSwitch/hello.js/commit/d6f5137f30de6e0ef7048191ee6ae575fdc2f669"},{"reference_url":"https://snyk.io/vuln/SNYK-JS-HELLOJS-1014546","reference_id":"","reference_type":"","scores":[{"value":"9.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JS-HELLOJS-1014546"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7741","reference_id":"CVE-2020-7741","reference_type":"","scores":[{"value":"9.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7741"},{"reference_url":"https://github.com/advisories/GHSA-7jh9-6cpf-h4m7","reference_id":"GHSA-7jh9-6cpf-h4m7","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-7jh9-6cpf-h4m7"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/78876?format=json","purl":"pkg:npm/hellojs@1.18.6","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-aggf-krtn-2bez"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/hellojs@1.18.6"},{"url":"http://public2.vulnerablecode.io/api/packages/274285?format=json","purl":"pkg:npm/hellojs@2.0.0-2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/hellojs@2.0.0-2"}],"aliases":["CVE-2020-7741","GHSA-7jh9-6cpf-h4m7"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-vd4u-ed81-myar"}],"fixing_vulnerabilities":[],"risk_score":"4.5","resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/hellojs@0.2.3"}