{"id":"CVE-2026-89260","title":"MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpoint","summary":"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 u…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-611"],"vendor":"moxi624","product":"MoguBlog","affected":["MoguBlog <= 6.2"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-11T16:49:37.906838Z"},"exploitAvailable":true,"published":"2026-09-11","updated":"2026-09-11","sourceUpdated":"2026-09-11T20:29:35.850Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89260","references":[{"url":"https://github.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C10_wechat_callback_unsigned.py","label":"C10 - POST /wechat/wechatCheck unauthenticated XXE proof of concept"},{"url":"https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_utils/src/main/java/com/moxi/mogublog/utils/wechat/SignUtil.java","label":"SignUtil.xmlToMap builds an unhardened dom4j SAXReader"},{"url":"https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_web/src/main/java/com/moxi/mogublog/web/restapi/WechatRestApi.java","label":"WechatRestApi POST /wechatCheck parses the body without verifying the signature"},{"url":"https://gitee.com/moxi159753/mogu_blog_v2/releases","label":"MoguBlog releases"},{"url":"https://github.com/moxi624/mogu_blog_v2","label":"Product"},{"url":"https://www.vulncheck.com/advisories/mogublog-through-6.2-xml-external-entity-injection-in-the-unauthenticated-wechat-callback-endpoint","label":"VulnCheck Advisory: MoguBlog through 6.2 XML External Entity Injection in the Unauthenticated WeChat Callback Endpoint"}],"tags":["cve.org","exploit-available"],"epss":0.00425,"epssPercentile":0.36286,"ingestedAt":"2026-09-14T11:11:19.882Z","slug":"CVE-2026-89260","body":"## Overview\n\nMoguBlog 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.\n\n## Affected\n\n- `MoguBlog <= 6.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}