KsoaApplication · Yonyou

CVE-2026-1123

CRITICAL · 9.8 CVSS v3.1 Published 2026-01-18
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was identified in Yonyou KSOA 9.0. Affected is an unknown function of the file /worksheet/work_mod.jsp of the component HTTP GET Parameter Handler. Such manipulation of the argument ID leads to sql injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Yonyou KSOA 9.0 contains a SQL injection vulnerability in the /worksheet/work_mod.jsp file via the ID GET parameter. An unauthenticated remote attacker can exploit this to inject arbitrary SQL commands, potentially leading to full database compromise, data exfiltration, or remote code execution.

MitigationSince the vendor did not respond, apply compensatory controls: disable or restrict access to the vulnerable /worksheet/work_mod.jsp endpoint via web server configuration or WAF rules, implement strict input validation on the ID parameter, and consider network segmentation to limit exposure to untrusted networks.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
KsoaApplication
Affected:= 9.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if Yonyou KSOA is installed
    Search for Yonyou KSOA installation directories or check for the 'ksoa' product name in installed software inventories
    Affected if Yonyou KSOA software is present on the system
  2. Confirm the installed version is 9.0
    Locate version information in the KSOA installation - check installation directories, About pages, or version files typically found in the product's root or system directories
    Affected if The installed version is exactly 9.0
  3. Locate the vulnerable JSP file
    Search for the file /worksheet/work_mod.jsp within the KSOA web application directory structure - this is typically under the webroot or htdocs folder of the installation
    Affected if The file /worksheet/work_mod.jsp exists in the KSOA web directory
  4. Verify the vulnerable endpoint is accessible
    Test if HTTP access to /worksheet/work_mod.jsp returns a valid response - check if the application is serving this endpoint via HTTP/HTTPS
    Affected if The endpoint /worksheet/work_mod.jsp is reachable over the network

You are affected if Yonyou KSOA version 9.0 is installed AND the /worksheet/work_mod.jsp file is present and accessible, as this specific version contains the SQL injection flaw in the ID parameter handler.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Since the vendor did not respond, apply compensatory controls: disable or restrict access to the vulnerable /worksheet/work_mod.jsp endpoint via web server configuration or WAF rules, implement strict input validation on the ID parameter, and consider network segmentation to limit exposure to untrusted networks.

Fix this in Ksoa Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-1123 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data