CVE-2026-89260

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.

References

https://www.vulncheck.com/advisories/mogublog-through-6.2-xml-external-entity-injection-in-the-unauthenticated-wechat-callback-endpoint

https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_web/src/main/java/com/moxi/mogublog/web/restapi/WechatRestApi.java

https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_utils/src/main/java/com/moxi/mogublog/utils/wechat/SignUtil.java

https://github.com/moxi624/mogu_blog_v2

https://github.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C10_wechat_callback_unsigned.py

https://gitee.com/moxi159753/mogu_blog_v2/releases

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4