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JeecgBoot CVE-2026-108653

| EUVDEUVD-2026-96592 MEDIUM
Missing Authorization (CWE-862)
2026-10-10 VulnCheck GHSA-68w6-2grj-8rwq
5.3
CVSS 4.0 · Vendor: VulnCheck
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Attack ChainAIDerived

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

  1. Access
    Obtain any low-privileged JeecgBoot account
  2. Delivery
    Send GET /openapi/list
  3. Exploit
    Missing authorization returns registry
  4. Execution
    Harvest internal URLs and IP whitelists
  5. Impact
    Pivot against internal gateway backends

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Requires a valid authenticated JeecgBoot session for any low-privileged user (CVSS PR:L); no admin role, user interaction, or non-default configuration is needed because the queryPageList handler in OpenApiController lacks an authorization check on GET /openapi/list. Limiting factors: the attacker must first possess or obtain credentials (self-registration or stolen/leaked account), and the OpenAPI module/endpoint must be deployed and reachable; impact is read-only disclosure of OpenAPI registry definitions (virtual paths, internal origin URLs, IP whitelists, header/parameter templates) with no direct write or availability effect.

Impact

This is a genuine but modest-severity information-disclosure issue, not a top-tier emergency. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) and the 5.3 Medium score are internally consistent with the description: exploitation is network-reachable and low-complexity but requires an existing authenticated low-privileged account (PR:L), and impact is confined to confidentiality (VC:L, with VI:N/VA:N). The real-world driver is that a working POC is publicly available (published alongside a VulnCheck advisory), which materially raises the odds of opportunistic use against exposed instances. However, there is NO CISA KEV listing and NO EPSS score in the provided data, so there is no evidence of active, widespread exploitation - the signals point to a credential-gated reconnaissance primitive rather than a direct system takeover. The disclosed data (internal origin URLs, IP whitelists, header/parameter templates, virtual paths) is valuable as a stepping stone to attack the OpenAPI gateway or internal services, so the practical risk is as an enabler within a chain rather than as a standalone critical flaw. EPSS data is missing and should be checked to refine prioritization.

Exploit ScenarioDerived

An attacker who holds any valid low-privileged JeecgBoot account (self-registered or compromised) sends GET /openapi/list and receives the full OpenAPI registry, including internal origin URLs, IP whitelists, and admin-oriented header/parameter templates. A public POC (poc_openapi_config_and_call_gateway.py) demonstrates reading these definitions and exercising the gateway, so the attacker can use the leaked configuration to map and target internal backends. Because the CVSS vector is PR:L, this requires authentication but no special privilege or user interaction.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 10, 2026

JeecgBoot through 3.9.5 exposes an authorization gap in the OpenApiController.queryPageList handler, letting any authenticated user - including a low-privileged one - retrieve the OpenAPI registry listing via GET /openapi/list and read virtual paths, internal origin URLs, IP whitelists, and header/parameter templates meant for administrators. Exploitation requires only a valid, non-admin JeecgBoot session (CVSS PR:L) and publicly available exploit code exists, though no active exploitation has been confirmed via CISA KEV; the CVSS 3.1 assessment scores it 5.3 as a read-only confidentiality disclosure with no integrity or availability impact, and EPSS data was not provided. The practical risk is moderate: the leak itself does not grant code execution, but it hands an attacker the internal routing and gateway configuration needed to plan follow-on attacks against otherwise hidden backend services.

RemediationAI

No vendor-released patch was identified at time of analysis: the only code reference supplied (https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/openapi/controller/OpenApiController.java#L73-L80) points at the vulnerable handler rather than a fix commit, and the VulnCheck advisory (https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-get-openapi-list) does not publish a patched version, so check upstream release notes for 3.9.6-and-later builds and monitor the advisory for an update. The most direct mitigation is to add an explicit authorization check to queryPageList - a role or permission annotation such as @RequiresPermissions/@PreAuthorize requiring an administrator authority, or a programmatic check in the method body - which is a small, self-contained source change but must be re-applied after each upstream upgrade until an official fix lands. If code changes are not immediately possible and the OpenAPI gateway is not in active use, disable or undeploy the module entirely; the trade-off is losing the OpenAPI registry/proxy functionality. Otherwise, restrict the path /openapi/list (and the /openapi/** prefix) at the reverse proxy or API gateway so only trusted administrative source addresses or admin-authenticated sessions can reach it, accepting that this depends on the edge layer remaining correctly configured and may break legitimate admin tooling. Because exploitation requires a valid account, pair these controls with credential hygiene: audit and disable unused or self-registered low-privileged accounts, enforce strong admin credentials, and rotate any credentials that may have been leaked, since the disclosed IP whitelists and origin URLs degrade the value of network-based trust assumptions. Finally, review JeecgBoot access logs for GET /openapi/list requests from non-administrative users to detect reconnaissance; note that this endpoint is read-only, so detection must focus on the request itself rather than any write-side symptom.

Affected VersionsENISA

JeecgBoot 0 ≤3.9.5

Affected Packages

euvd jeecgboot no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

JeecgBoot is a Spring Boot-based low-code development platform whose system module ships an OpenAPI gateway component; the affected class is org.jeecg.modules.openapi.controller.OpenApiController, where the queryPageList method (referenced lines 73-80 in the upstream repository) is mapped to GET /openapi/list. The root cause is CWE-862 (Missing Authorization): the handler performs data retrieval without any permission or role check, so Spring Security's authentication layer is satisfied by any valid session while the authorization layer never runs. The endpoint paginates and returns OpenAPI registry records, which in JeecgBoot include the externally published virtual path, the internal upstream/origin URL, configured IP whitelists, and the header and parameter templates applied to proxied calls - effectively a map of the gateway's internal topology and its access-control intent. Because the disclosure is read-only (VC:L, VI:N, VA:N) and scoped to the vulnerable component (S:U), the CVSS 4.0 vector and the independent CVSS 3.1 assessment (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) agree on limited-severity information exposure once an attacker holds any authenticated account. The CPE cpe:2.3:a:jeecgboot:jeecgboot:*:*:*:*:*:*:*:* is version-agnostic, indicating the exposure is reported across the product line up to 3.9.5 rather than tied to one release.

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Severity by source

Vendor (VulnCheck) PRIMARY 5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 4.3 MEDIUM

Network-reachable, low-complexity endpoint requiring an authenticated low-privileged account (PR:L); only configuration metadata is disclosed, so C:L with I:N/A:N and unchanged scope.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the queryPageList handler of OpenApiController that allows any authenticated user to list OpenAPI registry definitions. Low-privileged attackers can query GET /openapi/list to read virtual paths, internal origin URLs, IP whitelists, and header and parameter templates intended for administrators.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
popular open-source low-code platform, common in enterprise/Asia but not ubiquitous
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 0.2%
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
No
Human Impact· derived
Medium

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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