{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78654", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-24T23:08:18.011Z", "datePublished": "2026-08-25T06:00:13.406Z", "dateUpdated": "2026-08-25T06:00:13.406Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-25T06:00:13.406Z"}, "title": "cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-1321", "lang": "en", "description": "Improperly Controlled Modification of Object Prototype Attributes"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-94", "lang": "en", "description": "Code Injection"}]}], "affected": [{"vendor": "cleverbrush", "product": "framework", "versions": [{"version": "4.0", "status": "affected"}, {"version": "4.1", "status": "affected"}, {"version": "4.2", "status": "affected"}, {"version": "4.3", "status": "affected"}, {"version": "4.4.0", "status": "affected"}, {"version": "4.4.1", "status": "unaffected"}], "cpes": ["cpe:2.3:a:cleverbrush:framework:*:*:*:*:*:*:*:*"]}, {"vendor": "cleverbrush", "product": "deep", "versions": [{"version": "4.0", "status": "affected"}, {"version": "4.1", "status": "affected"}, {"version": "4.2", "status": "affected"}, {"version": "4.3", "status": "affected"}, {"version": "4.4.0", "status": "affected"}, {"version": "4.4.1", "status": "unaffected"}], "cpes": ["cpe:2.3:a:cleverbrush:deep:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in cleverbrush framework and deep up to 4.4.0. This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. Upgrading to version 4.4.1 will fix this issue. The identifier of the patch is 810398c1308c500c3b8b6af380b5a89371389327. You should upgrade the affected component."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 7.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-08-24T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-25T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-25T01:13:27.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Classif1ed_mick (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/394866", "name": "VDB-394866 | cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/394866/cti", "name": "VDB-394866 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-78654", "name": "CVE-2026-78654 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/886401", "name": "Submit #886401 | cleverbrush @cleverbrush/deep (npm) <=4.4.0 Prototype Pollution", "tags": ["third-party-advisory"]}, {"url": "https://github.com/cleverbrush/framework/issues/213", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/cleverbrush/framework/pull/215", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327", "tags": ["patch"]}, {"url": "https://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1", "tags": ["patch"]}, {"url": "https://github.com/cleverbrush/framework/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202608"]}}}

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This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. Upgrading to version 4.4.1 will fix this issue. The identifier of the patch is 810398c1308c500c3b8b6af380b5a89371389327. 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{"created": "2026-08-25T07:30:12.102099+00:00", "updated": "2026-08-25T07:30:12.102104+00:00", "vendors": []}