CVE-2021-39339

Name: CVE-2021-39339
Creator: NVD / NIST
Published: 2021-09-22T11:15:07.503+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.33%

Last modified Jun 17, 2026

CVE-2021-39339 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The Telefication WordPress plugin is vulnerable to Open Proxy and Server-Side Request Forgery via the ~/bypass.php file due to a user-supplied URL request value that gets called by a curl requests. This affects versions up to, and including, 1.8.0.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

Description

The Telefication WordPress plugin is vulnerable to Open Proxy and Server-Side Request Forgery via the ~/bypass.php file due to a user-supplied URL request value that gets called by a curl requests. This affects versions up to, and including, 1.8.0.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.33%

67.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Telefication	Telefication	<= 1.8.0

References

https://plugins.trac.wordpress.org/browser/telefication/tags/1.8.0/bypass.phpThird Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39339Third Party Advisory
https://plugins.trac.wordpress.org/browser/telefication/tags/1.8.0/bypass.phpThird Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39339Third Party Advisory

Timeline

Published: Sep 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39339?

How severe is CVE-2021-39339?

CVE-2021-39339 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39339?

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-2021-39339?

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

Scan your code now

Source: NVD / NIST