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CVE-2018-25338— Zechat 1.5 SQL Injection 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SQL注入漏洞，该漏洞源于hashtag参数中的SQL注入，可能导致未经身份验证的攻击者使用联合查询技术提取数据库信息。

CVSS 8.2 · High EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bylancer Zechat 1.5 affected
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I. Basic Information for CVE-2018-25338

Vulnerability Information
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Vulnerability Title
Zechat 1.5 SQL Injection via hashtag parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Zechat 1.5 contains a SQL injection vulnerability in the hashtag parameter that allows unauthenticated attackers to extract database information using union-based techniques. Attackers can exploit the hashtag parameter with union-based payloads to retrieve table and column names.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Bylancer Zechat SQL注入漏洞
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SQL注入漏洞，该漏洞源于hashtag参数中的SQL注入，可能导致未经身份验证的攻击者使用联合查询技术提取数据库信息。
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-2018-25338

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III. Intelligence Information for CVE-2018-25338

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Vendor Advisories for CVE-2018-25338 (1)

Exploits & Public PoCs for CVE-2018-25338 (1)

Other References for CVE-2018-25338 (1)

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

CVE-2018-25339 8.2 HIGH Zechat 1.5 SQL Injection via v parameter (time-based blind)
CVE-2018-25334 5.4 MEDIUM Zechat 1.5 Cross-Site Request Forgery (CSRF) via hashtag parameter

IV. Related Vulnerabilities

Same product: Zechat
Same vendor: Bylancer
Same weakness: CWE-89

V. Comments for CVE-2018-25338

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