Critical
PraisonAI codeMode sandbox escape via Function constructor
Type: advisorySources: OSV
PraisonAI is a multi-agent teams system. From 1.4.0 until 1.7.2, codeMode in src/praisonai-ts/src/tools/builtins/code-mode.ts executes untrusted JavaScript with new Function() inside with(sandbox) and relies on a small source-code blocklist plus shadowed process and require properties. Code can use ({}).constructor.constructor to recover the real Function constructor, obtain process and process.mainModule.require, and reach host filesystem and subprocess APIs despite the advertised sandbox. Attackers who control codeMode input can read secrets, modify files, execute commands, or exhaust the host process. This issue is fixed in version 1.7.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-57138
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:11 UTC · Revision 1
Source evidence
PraisonAI codeMode sandbox escape via Function constructor
core-osv · Original sourcePublished 15 Sept 2026, 10:22 UTC
PraisonAI is a multi-agent teams system. From 1.4.0 until 1.7.2, codeMode in src/praisonai-ts/src/tools/builtins/code-mode.ts executes untrusted JavaScript with new Function() inside with(sandbox) and relies on a small source-code blocklist plus shadowed process and require properties. Code can use ({}).constructor.constructor to recover the real Function constructor, obtain process and process.mainModule.require, and reach host filesystem and subprocess APIs despite the advertised sandbox. Attackers who control codeMode input can read secrets, modify files, execute commands, or exhaust the host process. This issue is fixed in version 1.7.2.
osv:CVE-2026-57138
Complete source record
{
"id": "847739e7e305e1fcae4ede69f479a3de5c3a7107cfdda99cdf7b9ffcf8d7f611",
"url": "https://osv.dev/vulnerability/CVE-2026-57138",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "PraisonAI codeMode sandbox escape via Function constructor",
"summary": "PraisonAI is a multi-agent teams system. From 1.4.0 until 1.7.2, codeMode in src/praisonai-ts/src/tools/builtins/code-mode.ts executes untrusted JavaScript with new Function() inside with(sandbox) and relies on a small source-code blocklist plus shadowed process and require properties. Code can use ({}).constructor.constructor to recover the real Function constructor, obtain process and process.mainModule.require, and reach host filesystem and subprocess APIs despite the advertised sandbox. Attackers who control codeMode input can read secrets, modify files, execute commands, or exhaust the host process. This issue is fixed in version 1.7.2.",
"evidence": "osv:CVE-2026-57138",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-57138",
"aliases": [
"CVE-2026-57138",
"GHSA-vmmj-pfw7-fjwp"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mervinpraison/praisonai",
"type": "GIT",
"events": [
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"introduced": "0"
},
{
"fixed": "84b0fb12b6a2559ab91b5749d4b7c6a11253c511"
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{
"fixed": "709a0387853709a5e2f2c34680fa64cada252c27"
}
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"range": [
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
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"source": "REFERENCES_COMMIT"
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"modified": "2026-10-28T02:30:30.111260235Z",
"provider": "osv",
"references": [
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],
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],
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57138.json"
}
},
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 497171,
"published_at": "2026-09-15T10:22:19.249+00:00"
}