PT-2026-3389 · Yonyou · Yonyou Ksoa 9.0

Lx-66-Lx · Published 2026-01-18 · Updated 2026-02-09 · CVE-2026-1121

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Yonyou KSOA version 9.0

Description A flaw exists in Yonyou KSOA 9.0 related to the HTTP GET Parameter Handler component and the file /worksheet/del workplan.jsp. Specifically, manipulating the ID argument can lead to a SQL injection condition. This issue is remotely exploitable, and details about the exploit have been publicly disclosed. The vendor was notified but did not provide a response.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

SQL injection

Special Elements Injection

Weakness Enumeration

CWE-89

CWE-74

Related Identifiers

CVE-2026-1121

Affected Products

Yonyou Ksoa 9.0

References · 10

• 🔥 https://github.com/LX-66-LX/cve/issues/7 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1121 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1121 · Vendor Advisory
• https://t.me/cveNotify/151470 · Telegram Post
• https://vuldb.com/?submit.734548 · Note
• https://vuldb.com/?ctiid.341713 · Note
• https://twitter.com/RedPacketSec/status/2012917649584349273 · Twitter Post
• https://twitter.com/CVEnew/status/2012883248461103208 · Twitter Post
• https://vuldb.com/?id.341713 · Note
• https://twitter.com/cracbot/status/2014292011474628714 · Twitter Post