{"id":"CVE-2026-111699","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-111699","generatedAt":"2026-10-28T02:23:46.046Z","title":"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.","description":"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.","published":"2026-10-16T18:17:54.000Z","lastModified":"2026-10-21T21:17:55.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-306"],"affected":[],"epss":{"score":0.00411,"percentile":0.35111,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00326,"percentile":0.24117}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T18:17:54.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-16T18:17:53.633Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/config/ShiroConfig.java#L43-L49","source":"disclosure@vulncheck.com"},{"url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/modules/wx/controller/WxUserController.java#L31-L37","source":"disclosure@vulncheck.com"},{"url":"https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com/github/niefy/modules/wx/controller/WxUserTagsController.java#L31-L45","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/wx-api-cross-tenant-idor-and-unauth-fan-pii","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/niefy-wx-api-through-0.8.2-authentication-bypass-via-unverified-openid-cookie","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/wx-api-cross-tenant-idor-and-unauth-fan-pii","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-111699","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}