CVE-2020-23138

Name: CVE-2020-23138
Creator: NVD / NIST
Published: 2020-11-09T18:15:12.4+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.30%

Last modified Jun 17, 2026

CVE-2020-23138 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An unrestricted file upload vulnerability was discovered in the Microweber 1.1.18 admin account page. An attacker can upload PHP code or any extension (eg- .exe) to the web server by providing image data and the image/jpeg content type with a .php extension.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.

Description

An unrestricted file upload vulnerability was discovered in the Microweber 1.1.18 admin account page. An attacker can upload PHP code or any extension (eg- .exe) to the web server by providing image data and the image/jpeg content type with a .php extension.

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

1.30%

66.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Microweber	Microweber	1.1.18

References

https://gist.github.com/virendratiwari03/0918aaba97eba31666630996ab3aeec3Third Party Advisory
https://gist.github.com/virendratiwari03/800f96271f22c0c2f5aea126c7f1f170Third Party Advisory
https://gist.github.com/virendratiwari03/0918aaba97eba31666630996ab3aeec3Third Party Advisory
https://gist.github.com/virendratiwari03/800f96271f22c0c2f5aea126c7f1f170Third Party Advisory

Timeline

Published: Nov 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23138?

How severe is CVE-2020-23138?

CVE-2020-23138 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23138?

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-2020-23138?

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

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Source: NVD / NIST