CVE-2018-25334 Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameter
Attackers can bypass CSRF protections in Zechat to modify user data via a crafted hashtag parameter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-25334?
CVE-2018-25334 is a medium-severity vulnerability in Bylancer Zechat, published on 17 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Zechat 1.5 contains a Cross-Site Request Forgery (CSRF) vulnerability that allows an attacker to change a user's information by bypassing anti-CSRF protections. The application uses a CSRF token, but an attacker can use the hashtag parameter to inject an encoded payload and bypass the CSRF protection, allowing for unauthorized changes to user data. This can be exploited by tricking a user into submitting a crafted form or by using a script to obtain and set the CSRF token.
Weakness: CWE-352
Which versions are affected by CVE-2018-25334?
How do I fix CVE-2018-25334?
No fix has been published for CVE-2018-25334 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-25334 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25334 exists.
Sources
Also known as GHSA-j92p-x5jx-887r.