Medium
cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-78654
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 01:37 UTC · Revision 1
Source evidence
cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution
core-osv · Original sourcePublished 25 Aug 2026, 06:00 UTC
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.
osv:CVE-2026-78654
Complete source record
{
"id": "31ded1e646afcfa4a16e0967ead93d7faabe1cd39f5733ef623332bc5dae9375",
"url": "https://osv.dev/vulnerability/CVE-2026-78654",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution",
"summary": "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.",
"evidence": "osv:CVE-2026-78654",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-78654",
"aliases": [
"CVE-2026-78654"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
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],
"modified": "2026-10-28T02:30:48.947507532Z",
"provider": "osv",
"references": [
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"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78654.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-78654",
"https://vuldb.com/cve/CVE-2026-78654",
"https://vuldb.com/submit/886401",
"https://vuldb.com/vuln/394866",
"https://github.com/cleverbrush/framework/issues/213",
"https://vuldb.com/vuln/394866/cti",
"https://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327",
"https://github.com/cleverbrush/framework/pull/215",
"https://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78654.json"
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"value": "CVE-2026-78654",
"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 517036,
"published_at": "2026-08-25T06:00:13.406+00:00"
}