CVE-2020-35313

Name: CVE-2020-35313
Creator: NVD / NIST
Published: 2021-04-20T20:15:07.93+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 45.22%

Last modified Jun 17, 2026

CVE-2020-35313 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A server-side request forgery (SSRF) vulnerability in the addCustomThemePluginRepository function in index.php in WonderCMS 3.1.3 allows remote attackers to execute arbitrary code via a crafted URL to the theme/plugin installer.. EPSS estimates a 45.22% chance of exploitation in the next 30 days.

Description

A server-side request forgery (SSRF) vulnerability in the addCustomThemePluginRepository function in index.php in WonderCMS 3.1.3 allows remote attackers to execute arbitrary code via a crafted URL to 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

45.22%

98.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Wondercms	Wondercms	3.1.3

References

https://github.com/robiso/wondercmsProduct, Third Party Advisory
https://packetstormsecurity.com/files/160310/WonderCMS-3.1.3-Code-Execution-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/Exploit, Third Party Advisory
https://github.com/robiso/wondercmsProduct, Third Party Advisory
https://packetstormsecurity.com/files/160310/WonderCMS-3.1.3-Code-Execution-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-35313?

How severe is CVE-2020-35313?

CVE-2020-35313 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 45.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35313?

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-2020-35313?

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

Scan your code now

Source: NVD / NIST