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JeecgBoot CVE-2026-108651

| EUVDEUVD-2026-96590 MEDIUM
Missing Authorization (CWE-862)
2026-10-10 VulnCheck GHSA-p42c-xqf6-7f9q
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 account
  2. Exploit
    Call GET /sys/api/getRolesByUserId with arbitrary userId
  3. Execution
    Enumerate role codes across user IDs
  4. Impact
    Identify administrator accounts for follow-on targeting

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 session on the target JeecgBoot instance, even if only a low-privileged one (PR:L), so this is not remotely exploitable by fully unauthenticated attackers. Beyond holding any account, no special product configuration, feature flag, or deployment mode is needed - the missing authorization check on the getRolesByUserId handler of SystemApiController applies to the default endpoint GET /sys/api/getRolesByUserId. The limiting factor is the authentication requirement; the practical impact is bounded to disclosure of role codes (reconnaissance), with no direct write or availability effect.

Impact

This is a genuine but low-to-moderate priority information-disclosure flaw, not a critical issue. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) and the 5.3 score are internally consistent with the description: a network-reachable endpoint reachable by any authenticated low-privileged user, with only low confidentiality impact (VC:L) and no integrity or availability impact (VI:N/VA:N). Publicly available exploit code exists (a Python POC in the referenced GitHub repo), which raises operational risk, but this is NOT the same as active exploitation - there is no CISA KEV listing and no EPSS value was supplied, so widespread automated exploitation cannot be inferred. The realistic risk is that it functions as a privilege-escalation reconnaissance primitive: an attacker who already holds a low-privileged account can enumerate which userIds map to administrator role codes, feeding a follow-on targeted attack. No conflicting signals were observed - the CVSS vector (PR:L, authenticated) matches the description's 'authenticated users' / 'low-privileged attackers' language. Missing data: no EPSS score and no KEV status were provided, and no vendor patch version is identified, so remediation timing cannot be confirmed from the input.

Exploit ScenarioDerived

A low-privileged authenticated user of a JeecgBoot deployment (through 3.9.5) issues repeated GET /sys/api/getRolesByUserId requests, substituting arbitrary userId values. Because the handler performs no authorization check (CWE-862), it returns each target's role codes, letting the attacker enumerate accounts and pinpoint administrators to target next. A public Python POC for this exact endpoint is available, lowering the skill barrier.

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 JeecgBoot through 3.9.5 allows any authenticated user, including a low-privileged one, to read the role codes of arbitrary accounts by supplying a chosen userId to the endpoint GET /sys/api/getRolesByUserId. The flaw is a CWE-862 absence of an ownership or permission check in the getRolesByUserId handler of SystemApiController, so a valid session - not administrative rights - is the only prerequisite. Impact is limited to information disclosure useful for reconnaissance (identifying administrator accounts and mapping role assignments), with no write or availability effect; publicly available exploit code exists, and EPSS/KEV data indicate no confirmed active exploitation at time of analysis.

RemediationAI

No vendor-released patch or fixed version is identified in the available data, so treat this as 'No vendor-released patch identified at time of analysis' and monitor the JeecgBoot project and the VulnCheck advisory (https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-api-getrolesbyuserid) for an update; upgrade to the first release that adds an authorization check to the SystemApiController getRolesByUserId handler once it ships. Until then, apply compensating controls: block or restrict the route GET /sys/api/getRolesByUserId at the reverse proxy or WAF to trusted integration clients only - the trade-off is that legitimate external integrations relying on the /sys/api namespace may break; if the SystemApiController integration API is not used in your deployment, disable or remove that controller/route entirely, accepting loss of that integration surface; enforce an ownership/permission check via a servlet filter or Spring Security interceptor that compares the requested userId against the caller's identity or requires an administrative role, which requires custom code maintenance; and enable audit logging and alerting on repeated /sys/api/getRolesByUserId requests with varying userId values, since the public PoC script (https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_c095_sys_api_roles.py) enumerates role assignments - logging detects but does not prevent the disclosure. Because exploitation only requires a low-privileged authenticated session, also review account provisioning and remove stale or unnecessary accounts to shrink the attacker pool.

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 Java/Spring Boot low-code development platform, and the affected code lives in the jeecg-system-biz module's SystemApiController under the /sys/api/ integration namespace (source reference points to lines 155-158 of that controller). The root cause is CWE-862 (Missing Authorization): the getRolesByUserId handler returns role code data for whatever userId the caller supplies, without verifying that the caller is entitled to view that user's role assignments. Because the endpoint is reachable through a normal authenticated session and the CVSS 4.0 vector records PR:L (and the independent CVSS 3.1 assessment confirms AV:N/AC:L/PR:L/UI:N with C:L, I:N, A:N), the exposure is bounded to confidentiality of role metadata; there is no privilege escalation primitive in the component itself and no integrity or availability impact. The CPE cpe:2.3:a:jeecgboot:jeecgboot:*:*:*:*:*:*:*:* reflects that all released versions up to and including 3.9.5 are affected, and the public PoC script targets this exact /sys/api/getRolesByUserId route.

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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 endpoint needing any authenticated account (PR:L), no user interaction, limited confidentiality disclosure of role codes only, no integrity or availability impact.

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 getRolesByUserId handler of SystemApiController that allows authenticated users to retrieve any user's role codes. Low-privileged attackers can supply arbitrary userId values to GET /sys/api/getRolesByUserId to enumerate role assignments and identify administrator accounts.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
popular open-source low-code platform, common but not ubiquitous in enterprises
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

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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8.7 Jun 30

Unauthenticated report data exfiltration in JimuReport (JeecgBoot) through version 2.5.0 lets remote attackers export th

CVE-2026-58377 HIGH POC
8.6 Jun 30

Broken access control in JeecgBoot through 3.9.2 lets authenticated low-privilege users reach the OpenApiAuthController

CVE-2026-108657 HIGH POC
8.6 Oct 10

Privilege escalation in JeecgBoot through 3.9.5 lets any authenticated user approve their own pending tenant administrat

CVE-2026-108628 HIGH POC
8.6 Oct 10

Missing authorization in the saveDeptRolePermission endpoint of JeecgBoot's SysDepartPermissionController lets any authe

CVE-2024-57606 HIGH POC
7.5 Feb 07

SQL injection vulnerability in Beijing Guoju Information Technology Co., Ltd JeecgBoot v.3.7.2 allows a remote attacker

CVE-2023-34603 HIGH POC
7.5 Jun 19

JeecgBoot up to v 3.5.1 was discovered to contain a SQL injection vulnerability via the component queryFilterTableDictIn

CVE-2023-34602 HIGH POC
7.5 Jun 19

JeecgBoot up to v 3.5.1 was discovered to contain a SQL injection vulnerability via the component queryTableDictItemsByC

CVE-2026-108623 HIGH POC
7.1 Oct 10

JeecgBoot through 3.9.5 ships a system log controller whose batch-delete handler performs no authorization check, so any

CVE-2026-108648 HIGH POC
7.1 Oct 10

Database credential disclosure in JeecgBoot through 3.9.5 allows any authenticated low-privileged user to retrieve JDBC

CVE-2026-108671 HIGH POC
7.1 Oct 10

Missing authorization in JeecgBoot through 3.9.5 lets any authenticated user enumerate record IDs through the unguarded

CVE-2026-108677 HIGH POC
7.1 Oct 10

Authenticated low-privileged users of JeecgBoot through 3.9.5 can retrieve any other user's stored password ciphertext t

CVE-2026-108883 HIGH POC
7.1 Oct 11

Authenticated users of any privilege level on JeecgBoot through 3.9.5 can rewrite DingTalk, WeCom, or Feishu third-party

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