CVE-2021-34634

Name: CVE-2021-34634
Creator: NVD / NIST
Published: 2021-08-05T21:15:12.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2021-34634 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Nifty Newsletters WordPress plugin is vulnerable to Cross-Site Request Forgery via the sola_nl_wp_head function found in the ~/sola-newsletters.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 4.0.23.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

The Nifty Newsletters WordPress plugin is vulnerable to Cross-Site Request Forgery via the sola_nl_wp_head function found in the ~/sola-newsletters.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 4.0.23.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.70%

48.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sola-Newsletters Project	Sola-Newsletters	<= 4.0.23

References

https://plugins.trac.wordpress.org/browser/sola-newsletters/trunk/sola-newsletters.php#L774Exploit, Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34634Third Party Advisory
https://plugins.trac.wordpress.org/browser/sola-newsletters/trunk/sola-newsletters.php#L774Exploit, Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34634Third Party Advisory

Timeline

Published: Aug 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34634?

How severe is CVE-2021-34634?

CVE-2021-34634 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34634?

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-2021-34634?

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

Scan your code now

Source: NVD / NIST