How severe is CVE-2018-20318?

CVE-2018-20318 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-20318 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20318?

CVE-2018-20318 affects Wxjava Project Wxjava. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20318?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-20318 published?

CVE-2018-20318 was published on 2018-12-21 and last updated on 2026-06-17.

CVE-2018-20318

CVE-2018-20318 is a critical-severity vulnerability in Wxjava Project Wxjava with a CVSS 3.x base score of 9.8. 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-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Wxjava Project Wxjava
Published: 2018-12-21
Last modified: 2026-06-17

Description

An issue was discovered in weixin-java-tools v3.2.0. There is an XXE vulnerability in the getXmlDoc method of the BaseWxPayResult.java file.

Frequently asked questions

What is CVE-2018-20318?: An issue was discovered in weixin-java-tools v3.2.0. There is an XXE vulnerability in the getXmlDoc method of the BaseWxPayResult.java file.
How severe is CVE-2018-20318?: CVE-2018-20318 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-20318 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20318?: CVE-2018-20318 affects Wxjava Project Wxjava. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20318?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-20318 published?: CVE-2018-20318 was published on 2018-12-21 and last updated on 2026-06-17.

References

https://github.com/Wechat-Group/weixin-java-tools/issues/889

Affected products (1)

cpe:2.3:a:wxjava_project:wxjava:3.2.0:*:*:*:*:*:*:*

More vulnerabilities in Wxjava Project Wxjava

CVE-2019-5312 — Critical (CVSS 9.8): An issue was discovered in weixin-java-tools v3.3.0. There is an XXE vulnerability in the getXmlDoc method of the…

All CVEs affecting Wxjava Project Wxjava →

Other CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities

CVE-2022-22486 — Critical (CVSS 10.0): IBM Tivoli Workload Scheduler 9.4, 9.5, and 10.1 is vulnerable to an XML External Entity Injection (XXE) attack when…
CVE-2019-14678 — Critical (CVSS 10.0): SAS XML Mapper 9.45 has an XML External Entity (XXE) vulnerability that can be leveraged by malicious attackers in…
CVE-2015-9280 — Critical (CVSS 10.0): MailEnable before 8.60 allows XXE via an XML document in the request.aspx Options parameter.
CVE-2018-1000838 — Critical (CVSS 10.0): autopsy version <= 4.9.0 contains a XML External Entity (XXE) vulnerability in CaseMetadata XML Parser that can result…
CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
CVE-2018-1000835 — Critical (CVSS 10.0): KeePassDX version <= 2.5.0.0beta17 contains a XML External Entity (XXE) vulnerability in kdbx file parser that can…

Browse all CWE-611 (Improper Restriction of XML External Entity Reference (XXE)) vulnerabilities →