CVE-2026-89260
MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpoint
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 11, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 11, 2026
Description
MoguBlog through 6.2 contains an XML external entity injection vulnerability in the WeChat callback handler at POST /wechat/wechatCheck. The WechatRestApi.index() method passes the raw request body to SignUtil.xmlToMap(), which uses an unhardened dom4j SAXReader without DTD or external-entity restrictions. Unauthenticated remote attackers can submit DOCTYPE declarations with external parameter entities to read arbitrary local files or trigger outbound HTTP requests, with resolved entities reflected in error responses.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-611 Improper Restriction of XML External Entity Reference
Affected Products
| Product | Versions |
|---|---|
MoguBlogmoxi624 |
|
References
- C10 - POST /wechat/wechatCheck unauthenticated XXE proof of conceptexploit
- SignUtil.xmlToMap builds an unhardened dom4j SAXReadertechnical-description
- WechatRestApi POST /wechatCheck parses the body without verifying the signaturetechnical-description
- MoguBlog releasesrelease-notes
- Productproduct
- VulnCheck Advisory: MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpointthird-party-advisory
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