CVE-2021-30149

Name: CVE-2021-30149
Creator: NVD / NIST
Published: 2021-04-06T06:15:15.42+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 10.06%

Last modified Jun 17, 2026

CVE-2021-30149 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Composr 10.0.36 allows upload and execution of PHP files.. EPSS estimates a 10.06% chance of exploitation in the next 30 days.

Description

Composr 10.0.36 allows upload and execution of PHP files.

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

10.06%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Ocproducts	Composr	10.0.36

References

http://packetstormsecurity.com/files/162128/Composr-10.0.36-Shell-Upload.htmlExploit, Third Party Advisory
https://gitlab.com/composr-foundation/composr/commit/a71c44e03Patch, Third Party Advisory
http://packetstormsecurity.com/files/162128/Composr-10.0.36-Shell-Upload.htmlExploit, Third Party Advisory
https://gitlab.com/composr-foundation/composr/commit/a71c44e03Patch, Third Party Advisory

Timeline

Published: Apr 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30149?

Composr 10.0.36 allows upload and execution of PHP files.

How severe is CVE-2021-30149?

CVE-2021-30149 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 10.06% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30149?

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-2021-30149?

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

Scan your code now

Source: NVD / NIST