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PostgreSQL CVE-2026-40346

MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-04-15 https://github.com/nocobase/nocobase GHSA-mvvv-v22x-xqwp
PostgreSQL SSRF Microsoft Redis
6.4
CVSS 4.0 · GitHub Advisory
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Vulnerability Assessment

Weakness
CWE
CWE-918
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

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

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This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 26, 2026

Server-side request forgery (SSRF) in NocoBase's workflow HTTP request and custom request action plugins allows authenticated workspace members to access internal network services, cloud metadata endpoints, and localhost. The vulnerability has a public proof-of-concept and a low EPSS exploitation probability, with no confirmed active exploitation. A vendor-released patch is available in version 2.0.37.

Affected Packages

npm @nocobase/plugin-workflow-request fix: 2.0.37

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

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

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

GitHub Advisory PRIMARY 6.4 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Lifecycle Timeline

3
CVSS changed
Apr 18, 2026 - 00:22 NVD
6.4 (MEDIUM)
Patch released
Apr 15, 2026 - 20:30 nvd
Patch available
CVE Published
Apr 15, 2026 - 19:43 nvd
MEDIUM 6.4

DescriptionGitHub Advisory

Summary

NocoBase's workflow HTTP request plugin and custom request action plugin make server-side HTTP requests to user-provided URLs without any SSRF protection. An authenticated user can access internal network services, cloud metadata endpoints, and localhost.

Vulnerable Code

1. Workflow HTTP Request Plugin

packages/plugins/@nocobase/plugin-workflow-request/src/server/RequestInstruction.ts lines 117-128:

typescript
return axios.request({
  url: trim(url),  // User-controlled, no validation
  method,
  headers,
  params,
  timeout,
  ...(method.toLowerCase() !== 'get' && data != null
    ? { data: transformer ? await transformer(data) : data }
    : {}),
});

The url at line 98 comes directly from user workflow configuration with only whitespace trimming.

2. Custom Request Action Plugin

packages/plugins/@nocobase/plugin-action-custom-request/src/server/actions/send.ts lines 172-198:

typescript
const axiosRequestConfig = {
  baseURL: ctx.origin,
  ...options,
  url: getParsedValue(url, variables),  // User-controlled via template
  headers: { ... },
  params: getParsedValue(arrayToObject(params), variables),
  data: getParsedValue(toJSON(data), variables),
};
const res = await axios(axiosRequestConfig);  // No IP validation

Missing Protections

  • No request-filtering-agent or SSRF library (confirmed via grep across entire codebase)
  • No private IP range filtering
  • No cloud metadata endpoint blocking
  • No URL scheme validation
  • No DNS rebinding protection

Attack Scenario

  1. Authenticated user creates a workflow with HTTP Request node
  2. Sets URL to http://169.254.169.254/latest/meta-data/iam/security-credentials/
  3. Triggers the workflow
  4. Server fetches AWS metadata and returns IAM credentials in workflow execution logs

Alternatively via Custom Request action:

  1. Create custom request with URL http://127.0.0.1:5432 or http://10.0.0.1:8080/admin
  2. Execute the action
  3. Server makes request to internal service

Impact

  • Cloud metadata theft: AWS/GCP/Azure credentials via metadata endpoints
  • Internal network access: Scan and interact with services on private IP ranges
  • Database access: Connect to localhost databases (PostgreSQL, Redis, etc.)
  • Authentication required: Yes (authenticated user), but any workspace member can create workflows

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Threat Intel
1
1 source
Data Quality
6 sources
Confidence: High
NVD CVE.org EPSS Vulnrichment GHSA GitHub VulDB

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 No
EPSS 0.0%
Patch available Yes
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
Poc
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery HIGH

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

Affected Products (CPE)GitHub Advisory

pkg:npm/@nocobase_plugin-workflow-request

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References

Advisories & patches
ADVISORY https://github.com/nocobase/nocobase/security/advisories/GHSA-mvvv-v22x-xqwp ADVISORY https://vuldb.com/vuln/358187 REF https://github.com/advisories/GHSA-mvvv-v22x-xqwp REF https://github.com/nocobase/nocobase/commit/2853368243ed07339c62c548b7d475f4eeaada59 REF https://github.com/nocobase/nocobase/pull/9079 REF https://github.com/nocobase/nocobase/releases/tag/v2.0.37

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