CVE-2026-111699 Niefy wx-api through 0.8.2 Authentication Bypass via Unverified openid Cookie
Attackers can bypass authentication by supplying a raw openid cookie to read user data and modify fan tags in the Niefy wx-api service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111699?
CVE-2026-111699 is a medium-severity authentication bypass vulnerability in niefy wx-api, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-111699?
How do I fix CVE-2026-111699?
No fix has been published for CVE-2026-111699 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-111699 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111699 exists.
Sources
Also known as GHSA-jqmh-3xm7-92j3.