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Vulnerability record · CVE-2022-27140 · published 12 April 2022

CVE-2022-27140: Express-fileupload project express-fileupload unrestricted file upload vulnerability

EExpress Fileupload Project · Express Fileupload

An arbitrary file upload vulnerability in the file upload module of express-fileupload 1.3.1 allows attackers to execute arbitrary code via a crafted PHP file. NOTE: the vendor's position is that the observed behavior can only occur with "intentional misusing of the API": the express-fileupload middleware is not responsible for an application's business logic (e.g., determining whether or how a file should be renamed).

9.8 CVSS 3.1 Critical EPSS 2.9% · top 13.8% CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score, v2 7.5
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An arbitrary file upload vulnerability in the file upload module of express-fileupload 1.3.1 allows attackers to execute arbitrary code via a crafted PHP file. NOTE: the vendor's position is that the observed behavior can only occur with "intentional misusing of the API": the express-fileupload middleware is not responsible for an application's business logic (e.g., determining whether or how a file should be renamed).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/richardgirges/express-fileupload/issues/312#issuecomment-1134912967 Third Party Advisory
https://github.com/richardgirges/express-fileupload/issues/329#issuecomment-1387288644 Third Party Advisory
https://www.youtube.com/watch?v=4XpofFi84KI ExploitThird Party Advisory
https://github.com/richardgirges/express-fileupload/issues/312#issuecomment-1134912967 Third Party Advisory
https://github.com/richardgirges/express-fileupload/issues/329#issuecomment-1387288644 Third Party Advisory
https://www.youtube.com/watch?v=4XpofFi84KI ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-27140), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.