CVE-2022-27140

Name: CVE-2022-27140
Creator: NVD / NIST
Published: 2022-04-12T17:15:09.887+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.55%

Last modified Jun 17, 2026

CVE-2022-27140 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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).. EPSS estimates a 2.55% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.55%

83.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Express-Fileupload Project	Express-Fileupload	1.3.1

References

https://github.com/richardgirges/express-fileupload/issues/312#issuecomment-1134912967Third Party Advisory
https://github.com/richardgirges/express-fileupload/issues/329#issuecomment-1387288644Third Party Advisory
https://www.youtube.com/watch?v=4XpofFi84KIExploit, Third Party Advisory
https://github.com/richardgirges/express-fileupload/issues/312#issuecomment-1134912967Third Party Advisory
https://github.com/richardgirges/express-fileupload/issues/329#issuecomment-1387288644Third Party Advisory
https://www.youtube.com/watch?v=4XpofFi84KIExploit, Third Party Advisory

Timeline

Published: Apr 12, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-27140?

How severe is CVE-2022-27140?

CVE-2022-27140 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.55% probability of exploitation in the next 30 days.

How do I fix CVE-2022-27140?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-27140?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST