Bref Uploaded Files Not Deleted in Event-Driven Functions
Bref enable serverless PHP on AWS Lambda. When Bref is used with the Event-Driven Function runtime and the handler is a `RequestHandlerInterface`, then the Lambda event is converted to a PSR7 object. During the conversion process, if the request is a MultiPart, each part is parsed and for each which contains a file, it is extracted and saved in `/tmp` with a random filename starting with `bref_upload_`. The flow mimics what plain PHP does but it does not delete the temporary files when the request has been processed. An attacker could fill the Lambda instance disk by performing multiple MultiPart requests containing files. This vulnerability is patched in 2.1.13.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-24752
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 02:03 UTC · Revision 1
Source evidence
Bref Uploaded Files Not Deleted in Event-Driven Functions
core-osv · Original sourcePublished 1 Feb 2024, 16:10 UTC
Bref enable serverless PHP on AWS Lambda. When Bref is used with the Event-Driven Function runtime and the handler is a `RequestHandlerInterface`, then the Lambda event is converted to a PSR7 object. During the conversion process, if the request is a MultiPart, each part is parsed and for each which contains a file, it is extracted and saved in `/tmp` with a random filename starting with `bref_upload_`. The flow mimics what plain PHP does but it does not delete the temporary files when the request has been processed. An attacker could fill the Lambda instance disk by performing multiple MultiPart requests containing files. This vulnerability is patched in 2.1.13.
osv:CVE-2024-24752
Complete source record
{
"id": "269b2c067be34e5cd7ff3d129199782039b967d553a3d209816235abe5d7d380",
"url": "https://osv.dev/vulnerability/CVE-2024-24752",
"method": "structured",
"payload": {
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"title": "Bref Uploaded Files Not Deleted in Event-Driven Functions",
"summary": "Bref enable serverless PHP on AWS Lambda. When Bref is used with the Event-Driven Function runtime and the handler is a `RequestHandlerInterface`, then the Lambda event is converted to a PSR7 object. During the conversion process, if the request is a MultiPart, each part is parsed and for each which contains a file, it is extracted and saved in `/tmp` with a random filename starting with `bref_upload_`. The flow mimics what plain PHP does but it does not delete the temporary files when the request has been processed. An attacker could fill the Lambda instance disk by performing multiple MultiPart requests containing files. This vulnerability is patched in 2.1.13.",
"evidence": "osv:CVE-2024-24752",
"products": [],
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"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
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],
"modified": "2026-10-28T02:30:52.873765733Z",
"provider": "osv",
"references": [
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"https://github.com/brefphp/bref/security/advisories/GHSA-x4hh-frx8-98r5",
"https://nvd.nist.gov/vuln/detail/CVE-2024-24752",
"https://github.com/brefphp/bref/commit/350788de12880b6fd64c4c318ba995388bec840e"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/24xxx/CVE-2024-24752.json"
}
},
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521602,
"published_at": "2024-02-01T16:10:07.976+00:00"
}