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Jinher OA C6 EUVDEUVD-2026-119604

| CVE-2026-124331 MEDIUM
SQL Injection (CWE-89)
2026-11-08 VulDB GHSA-xh95-44r3-wvvp
5.5
CVSS 4.0 · Vendor: VulDB
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach ProjectAfficheManage.aspx remotely
  2. Delivery
    Supply malicious ProjID parameter
  3. Exploit
    Inject SQL into backend query
  4. Execution
    Database executes attacker SQL
  5. Impact
    Read or alter OA project data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The specific prerequisite is reaching the ProjectAfficheManage.aspx endpoint at /C6/JHSoft.Web.Project/OfficeReadOnly/ on a deployed Jinher OA C6 instance and supplying a manipulated ProjID argument; per the CVSS vector (AV:N/AC:L/PR:N/UI:N) no authentication, user interaction, or special configuration beyond the product being network-reachable is required. Limiting factors: exploitation is bounded to organizations actually running Jinher OA C6 (a niche, largely China-focused product) with this endpoint exposed to the attacker; no vendor patch exists (vendor unresponsive), and the available PoC is an unverified reference rather than confirmed working exploit code, so real-world reliability is uncertain.

Impact

This is a SQL injection (CWE-89) in Jinher OA C6 via the ProjID parameter of /C6/JHSoft.Web.Project/OfficeReadOnly/ProjectAfficheManage.aspx, reachable remotely. The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) indicates network-reachable, low-complexity, unauthenticated exploitation, which is the main driver of concern; however, the impact metrics are only Low across confidentiality, integrity and availability (VC:L/VI:L/VA:L), yielding a modest base score of 5.5. The vuln.today Decision label is 'this_month' - a scheduled-remediation priority rather than act_now or emergency. KEV status is NOT present (not confirmed actively exploited), and no EPSS score was supplied, so widespread-exploitation probability cannot be quantified from the input. A public PoC reference exists (GitHub issue) but it is not verified as working exploit code, so exploit maturity is Proof-of-Concept (E:P), not weaponized. Net: a genuinely remote, pre-auth SQLi is operationally meaningful, but the Low-rated impacts, absence of KEV, missing EPSS, and unverified PoC place this as a real-but-non-emergency issue for environments actually running Jinher OA C6. The vendor was contacted and did not respond, so no official patch or advisory is available - a factor that raises exposure duration.

Exploit ScenarioDerived

A remote, unauthenticated attacker sends a crafted request to ProjectAfficheManage.aspx with a malicious ProjID value, injecting SQL that the backend executes against the OA database. Depending on the database and query context, this could permit reading or manipulating stored project/announcement data consistent with the Low confidentiality/integrity/availability impacts rated in the CVSS vector. A public PoC reference exists (GitHub issue), but it is not verified as working exploit code, and the trigger specifics beyond the ProjID parameter are not detailed in the available sources.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet

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AnalysisAIv1 – Nov 08, 2026

SQL injection in Jinher OA C6 lets remote, unauthenticated attackers manipulate the ProjID argument submitted to /C6/JHSoft.Web.Project/OfficeReadOnly/ProjectAfficheManage.aspx so that attacker-controlled input reaches a backend database query, with a limited confidentiality, integrity and availability impact (assessed CVSS 3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). Any organization exposing this endpoint of the Jinher OA C6 collaboration platform to a network is in scope; exploitation requires only that the page be reachable, since no credentials or user interaction are needed per the assessed vector. No vendor-released patch has been identified - the vendor was contacted ahead of disclosure and did not respond - and a public PoC reference exists, though it is not verified as working exploit code, so real-world reliability remains unproven.

RemediationAI

No vendor-released patch has been identified at time of analysis - Jinher was contacted before disclosure and did not respond, so there is no fixed version to cite and no advisory URL to point to beyond the VulDB entries (https://vuldb.com/vuln/432651). Until the vendor ships a fix, the practical control is to remove the attack surface: block or take offline the path /C6/JHSoft.Web.Project/OfficeReadOnly/ProjectAfficheManage.aspx at the reverse proxy or WAF, accepting that project-announcement read access through that page will stop working for legitimate users. Where the page must stay available, restrict it to trusted internal ranges or VPN-only access and add request-inspection rules that reject SQL metacharacters or unexpected syntax in the ProjID parameter, with the trade-off that legitimate ProjID values carrying unusual characters may be rejected and that WAF signatures are bypassable if the backend query remains unparameterised. Because authentication is not required per the assessed vector, credential-based gating alone should not be relied upon; network-level restriction of the endpoint is the more dependable interim measure.

Affected VersionsENISA

OA C6

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a classic CWE-89 SQL injection in the ASP.NET-based Jinher OA C6 collaboration/office suite, specifically inside the OfficeReadOnly module handler ProjectAfficheManage.aspx. The ProjID parameter, which normally identifies a project announcement record, is passed into a database query without adequate neutralisation of SQL syntax, so a crafted value can alter query logic rather than simply select a record. Because the vulnerable code lives behind a web-accessible .aspx page, the attack surface is the HTTP request itself: the CVSS 4.0 vector defined by the reporter and the independent CVSS 3.1 assessment both assign AV:N/AC:L/PR:N/UI:N, meaning the endpoint is reachable over the network and no privileges or interaction are required in the assessed deployment. CPE coverage is a wildcard (cpe:2.3:a:jinher:oa:*:*:*:*:*:*:*:*), so no specific fixed or vulnerable version boundary is documented in the available sources, and the vendor has not published an advisory; the trigger is otherwise not described in the available sources. Impact is bounded to reading and modifying data reachable by the application's database account - the assessed vector rates confidentiality, integrity and availability impacts as Low rather than a full database takeover.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulDB) PRIMARY 5.5 MEDIUM
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
vuln.today AI 7.3 HIGH

Remote, low-complexity, unauthenticated injection on a reachable endpoint gives AV:N/AC:L/PR:N/UI:N; impacts kept Low to match the input's VC/VI/VA:L rating for this SQLi.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

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

Lifecycle Timeline

2
CVSS changed
Nov 08, 2026 - 14:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
CVE Published
Nov 08, 2026 - 13:45 cve.org
MEDIUM 5.5

DescriptionCVE.org

A vulnerability was identified in Jinher OA C6. This impacts an unknown function of the file /C6/JHSoft.Web.Project/OfficeReadOnly/ProjectAfficheManage.aspx. Such manipulation of the argument ProjID leads to sql injection. It is possible to launch the attack 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.

Threat Intelligence Overview

Prevalence
Low
Jinher OA C6 is a niche, largely China-focused office-automation suite
Exploit
POC
Public exploit code exists
Social Media
1
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS N/A
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

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