SQL Injection Vulnerability in Yonyou KSOA 9.0
CVE-2026-1121

6.9MEDIUM

Key Information:

Vendor

Yonyou

Status
Ksoa
Vendor
CVE Published:
18 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1121?

A vulnerability has been identified in Yonyou KSOA 9.0, specifically within an undocumented function in the /worksheet/del_workplan.jsp file. This issue arises from improper handling of the HTTP GET parameter 'ID', allowing for SQL injection attacks. Consequently, attackers can exploit this flaw remotely, potentially leading to unauthorized access to sensitive data. Despite efforts to notify the vendor regarding this vulnerability, there has been no response, making it imperative for users to take precautionary measures to safeguard their environments.

Affected Version(s)

KSOA 9.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-1121 - Proof of Concept

References

https://vuldb.com/?id.341713
vdb-entrytechnical-description
https://vuldb.com/?ctiid.341713
signaturepermissions-required
https://vuldb.com/?submit.734548
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LX-66-LX (VulDB User)
JSON
.