{"url":"http://public2.vulnerablecode.io/api/packages/225682?format=json","purl":"pkg:npm/immer@7.0.10","type":"npm","namespace":"","name":"immer","version":"7.0.10","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"9.0.6","latest_non_vulnerable_version":"9.0.6","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/11185?format=json","vulnerability_id":"VCID-2xa5-ggz7-uudj","summary":"Improperly Controlled Modification of Dynamically-Determined Object Attributes\nimmer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3757.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3757.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3757","reference_id":"","reference_type":"","scores":[{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69321","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69248","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.6927","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69256","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69227","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69266","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69275","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69255","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69306","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69313","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69162","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69178","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69198","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.69179","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00592","scoring_system":"epss","scoring_elements":"0.6923","published_at":"2026-04-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3757"},{"reference_url":"https://github.com/immerjs/immer","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer"},{"reference_url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237"},{"reference_url":"https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2000734","reference_id":"2000734","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2000734"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3757","reference_id":"CVE-2021-3757","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3757"},{"reference_url":"https://github.com/advisories/GHSA-c36v-fmgq-m8hx","reference_id":"GHSA-c36v-fmgq-m8hx","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-c36v-fmgq-m8hx"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4848","reference_id":"RHSA-2021:4848","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4848"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/39238?format=json","purl":"pkg:npm/immer@9.0.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@9.0.6"}],"aliases":["CVE-2021-3757","GHSA-c36v-fmgq-m8hx"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-2xa5-ggz7-uudj"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/11167?format=json","vulnerability_id":"VCID-48k4-6btj-9kha","summary":"Access of Resource Using Incompatible Type (Type Confusion)\nA type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition `(p === \"__proto__\" || p === \"constructor\")` in `applyPatches_` returns false if `p` is `['__proto__']` (or `['constructor']`). The `===` operator (strict equality operator) returns false if the operands have different type.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23436.json","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23436.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23436","reference_id":"","reference_type":"","scores":[{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.26949","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.26939","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.26996","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.27041","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.27056","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.26992","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.26923","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.27132","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.27096","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00098","scoring_system":"epss","scoring_elements":"0.27037","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0031","scoring_system":"epss","scoring_elements":"0.54125","published_at":"2026-04-29T12:55:00Z"},{"value":"0.0031","scoring_system":"epss","scoring_elements":"0.54171","published_at":"2026-04-21T12:55:00Z"},{"value":"0.0031","scoring_system":"epss","scoring_elements":"0.54137","published_at":"2026-04-24T12:55:00Z"},{"value":"0.0031","scoring_system":"epss","scoring_elements":"0.54149","published_at":"2026-04-26T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23436"},{"reference_url":"https://github.com/immerjs/immer","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/immerjs/immer"},{"reference_url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237","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/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237"},{"reference_url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266","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://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266"},{"reference_url":"https://snyk.io/vuln/SNYK-JS-IMMER-1540542","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://snyk.io/vuln/SNYK-JS-IMMER-1540542"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2041833","reference_id":"2041833","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2041833"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23436","reference_id":"CVE-2021-23436","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-2021-23436"},{"reference_url":"https://github.com/advisories/GHSA-33f9-j839-rf8h","reference_id":"GHSA-33f9-j839-rf8h","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-33f9-j839-rf8h"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/39238?format=json","purl":"pkg:npm/immer@9.0.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@9.0.6"}],"aliases":["CVE-2021-23436","GHSA-33f9-j839-rf8h"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-48k4-6btj-9kha"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/36313?format=json","vulnerability_id":"VCID-akqv-e39m-hye2","summary":"Prototype Pollution in immer\n## Overview\n\nAffected versions of immer are vulnerable to Prototype Pollution.\n\n## Proof of exploit\n\n```js\nconst {applyPatches, enablePatches} = require(\"immer\");\nenablePatches();\nlet obj = {};\nconsole.log(\"Before : \" + obj.polluted);\napplyPatches({}, [ { op: 'add', path: [ \"__proto__\", \"polluted\" ], value: \"yes\" } ]);\n// applyPatches({}, [ { op: 'replace', path: [ \"__proto__\", \"polluted\" ], value: \"yes\" } ]);\nconsole.log(\"After : \" + obj.polluted);\n```\n\n## Remediation\n\nVersion 8.0.1 contains a [fix](https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5) for this vulnerability, updating is recommended.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-28477.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-28477.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-28477","reference_id":"","reference_type":"","scores":[{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.455","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45547","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45622","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45642","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45589","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45643","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45665","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45635","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45693","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45689","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45638","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45552","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.4556","published_at":"2026-04-26T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-28477"},{"reference_url":"https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213"},{"reference_url":"https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5"},{"reference_url":"https://github.com/immerjs/immer/issues/738","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/issues/738"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28477","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28477"},{"reference_url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986"},{"reference_url":"https://snyk.io/vuln/SNYK-JS-IMMER-1019369","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JS-IMMER-1019369"},{"reference_url":"https://www.npmjs.com/package/immer","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.npmjs.com/package/immer"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1918162","reference_id":"1918162","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1918162"},{"reference_url":"https://github.com/advisories/GHSA-9qmh-276g-x5pj","reference_id":"GHSA-9qmh-276g-x5pj","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advis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