CVE-2026-111699
MEDIUM
CVSS 4.8
Published: 2026-10-16
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-111699 |
| CVSS Score | 4.8 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com…
- https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com…
- https://github.com/niefy/wx-api/blob/0.8.2/src/main/java/com…
- https://hackmd.io/@hieuPenguinnn/wx-api-cross-tenant-idor-an…
- https://www.vulncheck.com/advisories/niefy-wx-api-through-0.…