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CVE-2018-25334— Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameter

Quick assessment

Affected
Bylancer Zechat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bylancer Zechat是Bylancer公司的一个支持实时消息、群组聊天与社交互动的PHP即时通讯系统。 Bylancer Zechat 1.5版本存在跨站请求伪造漏洞，该漏洞源于跨站请求伪造，可能导致攻击者通过绕过反CSRF保护更改用户信息。

CVSS 5.4 · Medium EPSS 0.14% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bylancer Zechat 1.5 affected
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I. Basic Information for CVE-2018-25334

Vulnerability Information
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Vulnerability Title
Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Bylancer Zechat 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bylancer Zechat是Bylancer公司的一个支持实时消息、群组聊天与社交互动的PHP即时通讯系统。 Bylancer Zechat 1.5版本存在跨站请求伪造漏洞，该漏洞源于跨站请求伪造，可能导致攻击者通过绕过反CSRF保护更改用户信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Bylancer Zechat 1.5 -

II. Public POCs for CVE-2018-25334

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III. Intelligence Information for CVE-2018-25334

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Exploits & Public PoCs for CVE-2018-25334 (1)

News Coverage for CVE-2018-25334 (1)

Other References for CVE-2018-25334 (1)

Same Patch Batch · Bylancer · 2026-05-17 · 3 CVEs total

CVE-2018-25338 8.2 HIGH Zechat 1.5 SQL Injection via hashtag parameter
CVE-2018-25339 8.2 HIGH Zechat 1.5 SQL Injection via v parameter (time-based blind)

IV. Related Vulnerabilities

Same product: Zechat
Same vendor: Bylancer
Same weakness: CWE-352

V. Comments for CVE-2018-25334

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