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CVE-2021-38356

MEDIUMCVSS 6.1/10EPSS 0.84%

Last modified

CVE-2021-38356 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The NextScripts: Social Networks Auto-Poster <= 4.3.20 WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $_REQUEST['page'] parameter which is echoed out on inc/nxs_class_snap.php by supplying the appropriate value 'nxssnap-post' to load the page in $_GET['page'] along with malicious JavaScript in $_POST['page'].. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

The NextScripts: Social Networks Auto-Poster <= 4.3.20 WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $_REQUEST['page'] parameter which is echoed out on inc/nxs_class_snap.php by supplying the appropriate value 'nxssnap-post' to load the page in $_GET['page'] along with malicious JavaScript in $_POST['page'].

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.84%

53.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NextscriptsSocial Networks Auto Poster<= 4.3.20

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-38356?
The NextScripts: Social Networks Auto-Poster <= 4.3.20 WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $_REQUEST['page'] parameter which is echoed out on inc/nxs_class_snap.php by supplying the appropriate value 'nxssnap-post' to load the page in $_GET['page'] along with malicious JavaScript in $_POST['page'].
How severe is CVE-2021-38356?
CVE-2021-38356 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38356?
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-2021-38356?

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

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Source: NVD / NIST