VulnerabilityPublished 19 Jan 2026Updated 23 Feb 2026

CVE-2026-1177: Yonyou KSOA · SQL Injection

Affects Yonyou KSOASource CVE Database V5

Public exploit available · CVSS 6.9 Medium.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS: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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
YonyouKSOA	Affected =9.0	Fixed in–

CPE configurations (1)

cpe:2.3:a:yonyou:ksoa:*:*:*:*:*:*:*:*

AI-suggested

Given the lack of an official patch from Yonyou, organizations should implement immediate compensating controls. First, apply strict input validation and sanitization at the web application firewall (WAF) or reverse proxy level to detect and block malicious SQL injection payloads targeting the 'folderid' parameter in /kmf/save_folder.jsp requests. Employ anomaly detection to monitor unusual query patterns or spikes in traffic to this endpoint. Restrict network access to the KSOA application to trusted IP ranges and enforce strong segmentation to limit exposure. Conduct thorough code reviews and consider temporary code-level fixes or parameterized queries if source code access is available. Regularly audit logs for signs of exploitation attempts and prepare incident response plans. Additionally, organizations should engage with Yonyou support channels to demand timely patches and updates. Finally, maintain up-to-date backups of critical data to enable recovery in case of data integrity compromise.

Description

A weakness has been identified in Yonyou KSOA 9.0. Affected by this vulnerability is an unknown functionality of the file /kmf/save_folder.jsp of the component HTTP GET Parameter Handler. Executing a manipulation of the argument folderid can lead to sql injection. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The SQL injection vulnerability in Yonyou KSOA 9.0 can have significant impacts on affected organizations. Exploitation could lead to unauthorized disclosure of sensitive business data, unauthorized modification or deletion of records, and potential disruption of business processes managed through the KSOA platform. Since the vulnerability requires no authentication and can be exploited remotely, attackers could leverage it to gain foothold within enterprise environments, potentially escalating attacks or moving laterally. The partial impact on confidentiality, integrity, and availability means that while the entire system may not be compromised, critical data and functions could be affected, leading to operational downtime, reputational damage, and regulatory compliance issues. The absence of a vendor patch and the existence of public exploits increase the likelihood of active exploitation attempts, especially targeting organizations with high-value data or strategic importance. This threat is particularly concerning for enterprises in sectors such as finance, government, and manufacturing that rely heavily on Yonyou KSOA for internal workflows.

Summary

CVE-2026-1177 identifies a SQL injection vulnerability in Yonyou KSOA version 9.0, specifically within the /kmf/save_folder.jsp component that handles HTTP GET requests. The vulnerability is triggered by manipulating the 'folderid' parameter, which is not properly sanitized before being incorporated into SQL queries. This flaw allows remote attackers to inject malicious SQL code, potentially enabling unauthorized data access, modification, or deletion. The attack requires no authentication or user interaction, making it easier to exploit remotely over the network. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Despite the medium severity rating, the availability of a public exploit increases the urgency for remediation. The vendor, Yonyou, has not responded to disclosure requests, and no official patches have been released, leaving users exposed. Yonyou KSOA is an enterprise software product widely used in China and other Asian markets for office automation and business process management, making this vulnerability particularly relevant to organizations relying on this platform. The lack of vendor response and public exploit availability heighten the risk of exploitation by threat actors aiming to compromise sensitive business data or disrupt operations.

References

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