CVE-2018-20422

Name: CVE-2018-20422
Creator: NVD / NIST
Published: 2018-12-24T04:29:00.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.29%

Last modified Jun 17, 2026

CVE-2018-20422 is a vulnerability of currently unknown severity. Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to bypass authentication by leveraging a non-empty #wechat#common_member_wechatmp to gain login access to an account via a plugin.php ac=wxregister request (the attacker does not have control over which account will be accessed).. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to bypass authentication by leveraging a non-empty #wechat#common_member_wechatmp to gain login access to an account via a plugin.php ac=wxregister request (the attacker does not have control over which account will be accessed).

Metrics

EPSS Probability

1.29%

66.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Comsenz	Discuzx	x3.4

References

https://gitee.com/ComsenzDiscuz/DiscuzX/issues/IPRUIExploit, Issue Tracking, Third Party Advisory
https://gitee.com/ComsenzDiscuz/DiscuzX/issues/IPRUIExploit, Issue Tracking, Third Party Advisory

Timeline

Published: Dec 24, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20422?

How severe is CVE-2018-20422?

Severity scoring for CVE-2018-20422 is pending analysis. The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20422?

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-2018-20422?

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

Scan your code now

Source: NVD / NIST