{"api_version":"1","generated_at":"2026-07-23T13:58:01+00:00","cve":"CVE-2023-45811","urls":{"html":"https://cve.report/CVE-2023-45811","api":"https://cve.report/api/cve/CVE-2023-45811.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-45811","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-45811"},"summary":{"title":"CVE-2023-45811","description":"Synchrony deobfuscator is a javascript cleaner & deobfuscator.  A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-10-17 23:15:00","updated_at":"2023-10-25 13:33:00"},"problem_types":["CWE-1321"],"metrics":[],"references":[{"url":"https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts","name":"https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"404","archivestatus":"404"},{"url":"https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx","name":"https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx","refsource":"MISC","tags":[],"title":"Prototype pollution vulnerability leading to arbitrary code execution · Advisory · relative/synchrony · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","name":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","refsource":"MISC","tags":[],"title":"Merge pull request from GHSA-jg82-xh3w-rhxx · relative/synchrony@b583126 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-45811","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45811","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"45811","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"relative","cpe5":"synchrony","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"nodejs","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-45811","qid":"995641","title":"NodeJs (Npm) Security Update for deobfuscator (GHSA-jg82-xh3w-rhxx)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-45811","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Synchrony deobfuscator is a javascript cleaner & deobfuscator.  A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags\n"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","cweId":"CWE-1321"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"relative","product":{"product_data":[{"product_name":"synchrony","version":{"version_data":[{"version_affected":"=","version_value":">= 2.0.1, < 2.4.4"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx","refsource":"MISC","name":"https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx"},{"url":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","refsource":"MISC","name":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40"},{"url":"https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts","refsource":"MISC","name":"https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts"}]},"source":{"advisory":"GHSA-jg82-xh3w-rhxx","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-10-17 23:15:00","lastModifiedDate":"2023-10-25 13:33:00","problem_types":["CWE-1321"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:relative:synchrony:*:*:*:*:*:nodejs:*:*","versionStartIncluding":"2.0.1","versionEndExcluding":"2.4.4","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}