CVE-2018-25334

MEDIUM 5.4

Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameter

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-352
Vendor	bylancer
Product	zechat
Published	May 17, 2026
Last Updated	May 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Bylancer / Zechat

1.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/44685 bylancer.com: https://bylancer.com vulncheck.com: https://www.vulncheck.com/advisories/zechat-cross-site-request-forgery-csrf-via-hashtag-parameter

Credits

Borna nematzadeh (L0RD) or [email protected]