{"id":"CVE-2026-111699","summary":"Niefy wx-api through 0.8.2 Authentication Bypass via Unverified openid Cookie","details":"Niefy wx-api through 0.8.2 contains an authentication bypass vulnerability that allows unauthenticated attackers to impersonate WeChat fans by supplying a raw openid cookie to fan-facing controllers. Attackers knowing a victim's openid can call /wxUser/getUserInfo and /wxUserTags endpoints to read nickname, phone, unionid and tags, and add or remove fan tags.","modified":"2026-10-21T02:55:49.148517200Z","published":"2026-10-16T17:39:53.049Z","database_specific":{"cwe_ids":["CWE-306"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111699.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111699.json"},{"type":"PACKAGE","url":"https://github.com/niefy/wx-api"},{"type":"ARTICLE","url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/config/ShiroConfig.java#L43-L49"},{"type":"ARTICLE","url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/modules/wx/controller/WxUserController.java#L31-L37"},{"type":"ARTICLE","url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/modules/wx/controller/WxUserTagsController.java#L31-L45"},{"type":"ADVISORY","url":"https://hackmd.io/@hieuPenguinnn/wx-api-cross-tenant-idor-and-unauth-fan-pii"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111699"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/niefy-wx-api-through-0.8.2-authentication-bypass-via-unverified-openid-cookie"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/niefy/wx-api","events":[{"introduced":"0"},{"last_affected":"d16f5f1e76e0fbcf5df9b8afe71c1601ff7e67aa"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"last_affected":"0.8.2"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["0.8.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111699.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}