CVE-2020-35314

Name: CVE-2020-35314
Creator: NVD / NIST
Published: 2021-04-20T20:15:08.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 26.91%

Last modified Jun 17, 2026

CVE-2020-35314 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A remote code execution vulnerability in the installUpdateThemePluginAction function in index.php in WonderCMS 3.1.3, allows remote attackers to upload a custom plugin which can contain arbitrary code and obtain a webshell via the theme/plugin installer.. EPSS estimates a 26.91% chance of exploitation in the next 30 days.

Description

A remote code execution vulnerability in the installUpdateThemePluginAction function in index.php in WonderCMS 3.1.3, allows remote attackers to upload a custom plugin which can contain arbitrary code and obtain a webshell via the theme/plugin installer.

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

26.91%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Wondercms	Wondercms	3.1.3

References

https://github.com/robiso/wondercmsProduct, Third Party Advisory
https://packetstormsecurity.com/files/160311/WonderCMS-3.1.3-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/Exploit, Third Party Advisory
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/#authenticated-remote-code-executionExploit, Third Party Advisory
https://github.com/robiso/wondercmsProduct, Third Party Advisory
https://packetstormsecurity.com/files/160311/WonderCMS-3.1.3-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/Exploit, Third Party Advisory
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/#authenticated-remote-code-executionExploit, Third Party Advisory

Timeline

Published: Apr 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35314?

How severe is CVE-2020-35314?

CVE-2020-35314 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 26.91% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35314?

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-2020-35314?

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

Scan your code now

Source: NVD / NIST