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JeecgBoot CVE-2026-108640

| EUVDEUVD-2026-96579 MEDIUM
Missing Authorization (CWE-862)
2026-10-10 VulnCheck GHSA-j46f-xgm7-j2hq
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 low-privileged JeecgBoot account
  2. Exploit
    Send GET /sys/sysDepartRole/queryById with arbitrary id
  3. Execution
    Missing Shiro authorization check bypassed
  4. Impact
    Read out-of-scope department role data

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

Exploitation requires a valid low-privileged authenticated JeecgBoot session (PR:L) and network access to the /sys/sysDepartRole/queryById endpoint; the attacker simply supplies an arbitrary id value. The specific precondition is that the queryById handler in SysDepartRoleController is missing its Shiro @RequiresPermissions annotation, so any logged-in user - regardless of department scope - can read records. Limiting factors: an account is needed (so not exploitable by fully unauthenticated outsiders), impact is read-only disclosure of department role metadata (names, codes, descriptions, audit fields) with no write or availability effect, and exposure depends on the JeecgBoot system API being reachable by non-admin users.

Impact

This is a genuine but low-severity information-disclosure issue, correctly scored CVSS 4.0 5.3 (Medium). The vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N is internally consistent with the description: network-reachable (AV:N), low complexity with no special attack requirements (AC:L/AT:N), and requiring an existing low-privileged authenticated account (PR:L) - this is an insecure-direct-object / missing-authorization flaw (CWE-862), not an unauthenticated breach. Impact is limited to confidentiality of a narrow data set (VC:L only; department role names, codes, descriptions, audit fields) with no integrity or availability impact, which is why severity stays Medium despite the easy network vector. Publicly available POC code (VulnCheck advisory plus a GitHub exploit script) raises practical exploitability and lowers the barrier to opportunistic abuse, but the CVE is NOT listed in CISA KEV and no EPSS score was provided in the input, so there is no evidence of active or widespread exploitation - treat POC availability and active exploitation as distinct signals. Net: a real, confirmable issue worth patching in JeecgBoot deployments that expose the admin API to multiple user tiers, but not an emergency relative to unauthenticated RCE-class bugs.

Exploit ScenarioDerived

A low-privileged authenticated user (e.g. an ordinary operator account) sends GET /sys/sysDepartRole/queryById?id=<arbitrary_id> and receives department role records they were never authorized to view, because the handler lacks the Shiro permission annotation. A public POC script (poc_org_scope_reads.py) automates this enumeration across organizational scope, allowing harvesting of role metadata outside the attacker's assigned department.

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

Missing authorization in the JeecgBoot SysDepartRole queryById handler (all versions through 3.9.5) lets any authenticated user - regardless of department scope - read department-role metadata such as role names, codes, descriptions, and audit fields by issuing GET /sys/sysDepartRole/queryById with an arbitrary id value. Exploitation requires only a valid low-privileged session on a reachable JeecgBoot system API, so it is not exploitable by fully unauthenticated outsiders, and publicly available exploit code exists, making the flaw trivially reproducible for anyone holding basic account credentials. The impact is limited to read-only disclosure of role metadata with no write or availability effect, consistent with the assessed CVSS 4.0 score of 5.3 (Medium) and CWE-862 (Missing Authorization).

RemediationAI

No vendor-released patch was identified at time of analysis; the provided CVE references point to the vulnerable source lines and the VulnCheck advisory rather than to a fixed release, commit, or pull request, so no exact patched version can be cited. The most direct fix is to add the appropriate Shiro permission annotation (for example @RequiresPermissions on the queryById method) in SysDepartRoleController so the endpoint enforces the same department-role permission required by sibling handlers, then rebuild and redeploy the jeecg-system-biz module; as a stopgap, administrators can restrict access to /sys/sysDepartRole/queryById at the reverse proxy, API gateway, or WAF so that only trusted administrative roles or internal networks can reach it, accepting that legitimate low-privileged UI flows depending on that route may break. Additional compensating controls with their trade-offs include narrowing the roles permitted to authenticate against the system API (reduces exposure but may lock out business users), adding server-side scope validation in the handler to verify the requesting user is entitled to the requested department role (requires custom code maintenance), and monitoring or alerting on GET requests to /sys/sysDepartRole/queryById containing unusual or sequential id values (detects enumeration but does not prevent it). Because the weakness is read-only metadata disclosure requiring a valid low-privileged account, credential hygiene and prompt revocation of unnecessary accounts meaningfully reduce the attack surface until an upstream fix is available; validated guidance should be tracked through the VulnCheck advisory at https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-sysdepartrole-querybyid.

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 secures controller endpoints with Apache Shiro permission annotations, typically @RequiresPermissions, enforced through the Shiro filter chain. The vulnerable handler is SysDepartRoleController.queryById, located at lines 170-175 of SysDepartRoleController.java in the jeecg-system-biz module, which was shipped without its Shiro authorization annotation. Because the endpoint relies solely on the authenticated-session requirement rather than a role/permission check, any logged-in user - including one whose department scope should exclude the target record - can reach the underlying department-role query by supplying an arbitrary id, and the backing persistence layer performs no ownership or scope filtering on the returned row. The root cause maps to CWE-862 (Missing Authorization): the class of bug in which an access-control decision is simply absent rather than implemented incorrectly. The affected CPE is cpe:2.3:a:jeecgboot:jeecgboot:*:*:*:*:*:*:*:*, i.e., the product line up to and including 3.9.5, and the vulnerability is a network-reachable (AV:N), low-complexity (AC:L) information-disclosure bug requiring low privileges (PR:L), matching the reported CVSS 4.0 vector and the assessed CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

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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

Authenticated low-privileged user over the network (PR:L, AV:N, AC:L) exploits a missing authz check for read-only disclosure of limited data, so C:L with I/A:N.

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 SysDepartRoleController queryById handler that lacks Shiro permission annotations. Low-privileged authenticated attackers can request GET /sys/sysDepartRole/queryById with any id to read department role names, codes, descriptions and audit fields.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
popular open-source low-code platform, moderate real-world enterprise deployment
Exploit
POC
Public exploit code exists
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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