What is CVE-2026-1121?

CVE-2026-1121 is a high-severity vulnerability in Yonyou Ksoa, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-01-18.

How severe is CVE-2026-1121?

High severity. CVSS v3 base score is 7.3 out of 10.

SQL Injection in Yonyou Ksoa

CVE-2026-1121

A vulnerability was found in Yonyou KSOA 9.0. This affects an unknown function of the file /worksheet/del_workplan.jsp of the component HTTP GET Parameter Handler. The manipulation of the argument ID results in sql injection. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published 2026-01-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (40.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Yonyou Ksoa — versions 9.0

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/LX-66-LX/cve/issues/7 (issue-tracking, exploit, Broken Link)

Frequently asked questions

What is CVE-2026-1121?: CVE-2026-1121 is a high-severity vulnerability in Yonyou Ksoa, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-01-18.
How severe is CVE-2026-1121?: High severity. CVSS v3 base score is 7.3 out of 10.