CVE-2018-20422
CVSS v3
8.1
HIGH
EPSS Score
1.3 %
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 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).
Technical details
- Published
- 2018-12-24
Frequently asked questions
What is CVE-2018-20422?
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).
Is CVE-2018-20422 actively exploited?
Active exploitation of CVE-2018-20422 has not been confirmed. Its EPSS score was 1.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-20422?
CVE-2018-20422 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2018-20422 affecting your environment?
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