CVE-2026-1133Public exploitNetwork attack vector

Unauthenticated database command execution via folderid concatenation

Published Jan 19, 2026 · Updated Jan 19, 2026

SQL injection in Yonyou KSOA 9.0 allows remote attackers to execute arbitrary SQL through the folderid GET parameter. Within /kmf/folder.jsp, the handler concatenates folderid directly into a backend query without validation or parameterization. The endpoint requires no authentication, and the published stacked-query delay payload demonstrates database command execution against Microsoft SQL Server.

CVSS severity9.8
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Yonyou KSOA 9.0 allows remote attackers to execute arbitrary SQL through the folderid GET parameter. Within /kmf/folder.jsp, the handler concatenates folderid directly into a backend query without validation or parameterization. The endpoint requires no authentication, and the published stacked-query delay payload demonstrates database command execution against Microsoft SQL Server.

The record

CVE
CVE-2026-1133
Published
Jan 19, 2026
Updated
Jan 19, 2026
Vendor
Yonyou Network Technology Co., Ltd.
Product
KSOA
Classifications
CWE-89, CWE-74, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yonyou Network Technology Co., Ltd. · KSOAversion=9.0

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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