CVE-2021-4301

Name: CVE-2021-4301
Creator: NVD / NIST
Published: 2023-01-07T22:15:08.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2021-4301 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability was found in slackero phpwcms up to 1.9.26 and classified as critical. Affected by this issue is some unknown functionality. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

A vulnerability was found in slackero phpwcms up to 1.9.26 and classified as critical. Affected by this issue is some unknown functionality. The manipulation of the argument $phpwcms['db_prepend'] leads to sql injection. The attack may be launched remotely. Upgrading to version 1.9.27 is able to address this issue. The patch is identified as 77dafb6a8cc1015f0777daeb5792f43beef77a9d. It is recommended to upgrade the affected component. VDB-217418 is the identifier assigned to this vulnerability.

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

0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Phpwcms	Phpwcms	< 1.9.27

References

https://github.com/slackero/phpwcms/commit/77dafb6a8cc1015f0777daeb5792f43beef77a9dPatch
https://github.com/slackero/phpwcms/releases/tag/v1.9.27Release Notes
https://vuldb.com/?ctiid.217418Third Party Advisory, VDB Entry
https://vuldb.com/?id.217418Third Party Advisory, VDB Entry
https://github.com/slackero/phpwcms/commit/77dafb6a8cc1015f0777daeb5792f43beef77a9dPatch
https://github.com/slackero/phpwcms/releases/tag/v1.9.27Release Notes
https://vuldb.com/?ctiid.217418Third Party Advisory, VDB Entry
https://vuldb.com/?id.217418Third Party Advisory, VDB Entry

Timeline

Published: Jan 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4301?

How severe is CVE-2021-4301?

CVE-2021-4301 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4301?

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-2021-4301?

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

Scan your code now

Source: NVD / NIST