CVE-2018-20423
CVSS v3
8.1
HIGH
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to bypass a "disabled registration" setting by adding a non-existing wxopenid value to the plugin.php ac=wxregister query string.
Technical details
- Published
- 2018-12-24
Frequently asked questions
What is CVE-2018-20423?
Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to bypass a "disabled registration" setting by adding a non-existing wxopenid value to the plugin.php ac=wxregister query string.
Is CVE-2018-20423 actively exploited?
Active exploitation of CVE-2018-20423 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-20423?
CVE-2018-20423 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2018-20423 affecting your environment?
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