Is there a public PoC exploit available for EUVD-2026-76984?

Yes, a public proof-of-concept exploit is available for EUVD-2026-76984. Prioritise patching immediately. EPSS: 0.2%.

OnlineBooks EUVD-2026-76984

Q: What is the CVSS score of EUVD-2026-76984?

EUVD-2026-76984 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.2%.

| CVE-2026-90511 LOW

SQL Injection (CWE-89)

2026-09-13 VulDB

GHSA-qc23-8529-4g4m

Java SQLi Onlinebooks

2.1

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

2.1 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

6.3 MEDIUM

Network-reachable, low-complexity SQLi; PR:L per CVSS 4.0 input; partial C/I/A impact consistent with standard SQL injection scope.

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

4.0 AV:N/AC:L/AT:N/PR:L/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

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Sep 13, 2026 - 11:22 NVD

MEDIUM LOW

CVSS changed

Sep 13, 2026 - 11:22 NVD

5.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Sep 13, 2026 - 11:20 vuln.today

CVE Published

Sep 13, 2026 - 10:30 cve.org

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was detected in GongShengyue OnlineBooks up to dfc5eacc08d3b0396c266049548618f6fb9587ea. This vulnerability affects unknown code of the file src/cn/ylcto/book/servlet/BooksServlet.java of the component listSplit Interface. The manipulation of the argument column results in sql injection. The attack may be performed from remote. The exploit is now public and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed.

AnalysisAI

SQL injection in GongShengyue OnlineBooks allows authenticated remote attackers to manipulate database queries through the column parameter of the listSplit interface in BooksServlet.java. The vulnerability enables partial data extraction, modification, and potential availability impact against the backend database. …

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Vulnerability AssessmentAI

Exploitation	Exploitation requires: (1) a valid low-privilege user account on the OnlineBooks application (PR:L per CVSS 4.0 vector); (2) network access to the listSplit interface endpoint in BooksServlet.java; (3) the application running at or before commit dfc5eacc08d3b0396c266049548618f6fb9587ea. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.0 base score of 5.3 (Medium) with vector AV:N/AC:L/AT:N/PR:L/UI:N reflects a network-reachable, low-complexity attack requiring low-privilege authentication, with partial impact across confidentiality, integrity, and availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	No vendor-released patch has been identified at time of analysis; the project's rolling-release model means no fixed version is disclosed. … Detailed patch versions, workarounds, and compensating controls in full report.