Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Vulnerable versions of weixin-java-common are those before 3.3.2.B, and the fix is in 3.3.2.B. The source describes an XML external entity (XXE) flaw in the getXmlDoc method of BaseWxPayResult.java, which stems from an incomplete fix for CVE-2018-20318. The source gives few details about what an attacker can do or what input triggers the issue. Upgrade to 3.3.2.B or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.8 | Critical | 3.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.017, the 77th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:18 UTC First seen by agentprime
- 31 Oct 2026, 14:18 UTC Confirmed by OSV