CVE-2018-20422
CVE-2018-20422 is a high-severity vulnerability in Comsenz Discuzx with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (67th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Comsenz Discuzx
- Published:
- Last modified:
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).
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).
- How severe is CVE-2018-20422?
- CVE-2018-20422 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-20422 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20422?
- CVE-2018-20422 affects Comsenz Discuzx. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20422?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-20422 published?
- CVE-2018-20422 was published on 2018-12-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:comsenz:discuzx:x3.4:*:*:*:*:*:*:*
More vulnerabilities in Comsenz Discuzx
- CVE-2018-20423 — High (CVSS 8.1): Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to bypass a "disabled registration" setting…
- CVE-2018-20424 — Medium (CVSS 5.9): Discuz! DiscuzX 3.4, when WeChat login is enabled, allows remote attackers to delete the common_member_wechatmp data…
All CVEs affecting Comsenz Discuzx →
Other CWE-287 (Improper Authentication) vulnerabilities
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- CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
- CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
- CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…
Browse all CWE-287 (Improper Authentication) vulnerabilities →