{"id":"CVE-2026-89260","state":"PUBLISHED","title":"MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpoint","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.","publishedAt":"2026-09-11T15:25:15.767Z","updatedAt":"2026-09-24T14:21:36.214Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["moxi624 MoguBlog"],"affected":[{"vendor":"moxi624","product":"MoguBlog","packageURL":"pkg:github/moxi624/mogu_blog_v2","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"6.2","versionType":"custom"}],"repo":"https://github.com/moxi624/mogu_blog_v2"}],"references":["https://github.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C10_wechat_callback_unsigned.py","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/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_web/src/main/java/com/moxi/mogublog/web/restapi/WechatRestApi.java","https://gitee.com/moxi159753/mogu_blog_v2/releases","https://github.com/moxi624/mogu_blog_v2","https://www.vulncheck.com/advisories/mogublog-through-6.2-xml-external-entity-injection-in-the-unauthenticated-wechat-callback-endpoint"],"weaknesses":["CWE-611"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89260.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89260","state":"PUBLISHED","datePublished":"2026-09-11T15:25:15.767Z","dateUpdated":"2026-09-24T14:21:36.214Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-11T10:52:56.668Z"},"containers":{"cna":{"title":"MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpoint","descriptions":[{"lang":"en","value":"MoguBlog through 6.2 contains an XML external entity injection vulnerability in the WeChat callback handler at POST /wechat/wechatCheck. 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