Common Weakness Enumeration
CWE-210
AllowedSelf-generated Error Message Containing Sensitive Information
Abstraction: Base · Status: Draft
The product identifies an error condition and creates its own diagnostic or error messages that contain sensitive information.
6 vulnerabilities reference this CWE, most recent first.
CVE-2026-73844 (GCVE-0-2026-73844)
Vulnerability from cvelistv5 – Published: 2026-08-14 16:41 – Updated: 2026-08-18 02:11
VLAI
EPSS
VEX
Title
CKAN MCP Server: Information disclosure via verbose error reflection
Summary
CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments). This vulnerability is fixed in 0.4.112.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 02:10 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ondata/ckan-mcp-server/securit… | x_refsource_CONFIRM |
| https://github.com/ondata/ckan-mcp-server/commit/… | x_refsource_MISC |
| https://github.com/ondata/ckan-mcp-server/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ondata | ckan-mcp-server |
Affected:
< 0.4.112
|
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CVE-2023-41027 (GCVE-0-2023-41027)
Vulnerability from cvelistv5 – Published: 2023-09-22 16:06 – Updated: 2024-09-24 18:06
VLAI
EPSS
VEX
Title
Juplink RX4-1500 Credential Disclosure Vulnerability
Summary
Credential disclosure in the '/webs/userpasswd.htm' endpoint in Juplink RX4-1500 Wifi router firmware versions V1.0.4 and V1.0.5 allows an authenticated attacker to leak the password for the administrative account via requests to the vulnerable endpoint.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-24 18:05 UTC
CWE
- CWE-210 - Insertion of Sensitive Information Into Sent Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://blog.exodusintel.com/2023/09/18/juplink-r… | third-party-advisory |
Impacted products
Date Public
2023-09-18 18:24
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CVE-2021-40126 (GCVE-0-2021-40126)
Vulnerability from cvelistv5 – Published: 2021-11-04 15:36 – Updated: 2024-11-07 21:42
VLAI
EPSS
VEX
Title
Cisco Umbrella Email Enumeration Vulnerability
Summary
A vulnerability in the web-based dashboard of Cisco Umbrella could allow an authenticated, remote attacker to perform an email enumeration attack against the Umbrella infrastructure. This vulnerability is due to an overly descriptive error message on the dashboard that appears when a user attempts to modify their email address when the new address already exists in the system. An attacker could exploit this vulnerability by attempting to modify the user's email address. A successful exploit could allow the attacker to enumerate email addresses of users in the system.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-07 21:39 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Umbrella Insights Virtual Appliance |
Affected:
n/a
|
Date Public
2021-11-03 00:00
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CVE-2018-19947 (GCVE-0-2018-19947)
Vulnerability from cvelistv5 – Published: 2020-09-11 14:14 – Updated: 2024-08-05 11:51
VLAI
EPSS
VEX
Summary
The vulnerability have been reported to affect earlier versions of Helpdesk. If exploited, this information exposure vulnerability could disclose sensitive information. QNAP has already fixed the issue in Helpdesk 3.0.3 and later.
Severity
4.3 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.qnap.com/zh-tw/security-advisory/qsa-20-05 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QNAP Systems Inc. | Helpdesk |
Affected:
unspecified , < 3.0.3
(custom)
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GHSA-3Q5Q-8RWQ-GWP8
Vulnerability from github – Published: 2023-09-22 18:30 – Updated: 2023-09-22 18:30
VLAI
Details
Credential disclosure in the '/webs/userpasswd.htm' endpoint in Juplink RX4-1500 Wifi router firmware versions V1.0.4 and V1.0.5 allows an authenticated attacker to leak the password for the administrative account via requests to the vulnerable endpoint.
Severity
8.0 (High)
{
"affected": [],
"aliases": [
"CVE-2023-41027"
],
"database_specific": {
"cwe_ids": [
"CWE-209",
"CWE-210"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-22T17:15:09Z",
"severity": "HIGH"
},
"details": "Credential disclosure in the \u0027/webs/userpasswd.htm\u0027 endpoint in Juplink RX4-1500 Wifi router firmware versions V1.0.4 and V1.0.5 allows an authenticated attacker to leak the password for the administrative account via requests to the vulnerable endpoint.\n\n",
"id": "GHSA-3q5q-8rwq-gwp8",
"modified": "2023-09-22T18:30:26Z",
"published": "2023-09-22T18:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41027"
},
{
"type": "WEB",
"url": "https://blog.exodusintel.com/2023/09/18/juplink-rx4-1500-credential-disclosure-vulnerability"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6F9W-9HF2-5RG3
Vulnerability from github – Published: 2026-09-03 14:49 – Updated: 2026-09-03 14:49
VLAI
Summary
CKAN MCP Server: Information disclosure via verbose error reflection
Details
Summary
Error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments).
Affected code
src/utils/http.ts — the entire decoded upstream body is embedded in the thrown error, which formatCkanError returns to the tool result:
} else {
throw new CkanApiError(
`CKAN API returned success=false: ${JSON.stringify(decodedData)}`, // full body reflected
undefined,
action
);
}
src/worker.ts — the catch-all handler returns the raw Error.message in the JSON-RPC data field:
return new Response(JSON.stringify({
jsonrpc: '2.0',
error: { code: -32603, message: 'Internal error',
data: error instanceof Error ? error.message : String(error) }, // raw internal message
id: null
}), { status: 500, ... });
Impact
- Reflects arbitrary upstream response content to the caller. Combined with the SSRF vectors (advisories #01/#06), an attacker can use this as the read channel: point the server at an internal endpoint and receive its body inside the
success=falseerror string (turning otherwise-blind SSRF into a semi-blind/return-value SSRF for any host that reaches the guards). - Leaks internal operational detail via exception messages: node error codes and target addresses (e.g.
ECONNREFUSED 169.254.169.254:80), which confirm internal reachability and infrastructure, and any stack/path fragments an upstream includes. - Aids reconnaissance and error-oracle attacks against the deployment.
Severity is Low on its own (the server holds no credentials of its own and sends no auth upstream), but it meaningfully amplifies the SSRF findings by providing a response-content channel.
Proof of concept
poc/error-disclosure-poc.mjs reproduces both paths and shows an upstream body
(containing a simulated DB error with an internal IP) and an internal
ECONNREFUSED 169.254.169.254 message being reflected to the caller.
Remediation
- Return generic, action-scoped error messages to the caller; log the detailed upstream body/exception server-side only.
- Do not embed
JSON.stringify(decodedData)in caller-visible errors; cap and redact any reflected content. - In the Workers catch-all, omit
error.messagefrom the responsedata(or replace with a correlation id) in production.
Severity
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@aborruso/ckan-mcp-server"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.112"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-73844"
],
"database_specific": {
"cwe_ids": [
"CWE-209",
"CWE-210"
],
"github_reviewed": true,
"github_reviewed_at": "2026-09-03T14:49:10Z",
"nvd_published_at": "2026-08-14T17:20:36Z",
"severity": "LOW"
},
"details": "## Summary\n\nError paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF\u0027d to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments).\n\n## Affected code\n\n`src/utils/http.ts` \u2014 the entire decoded upstream body is embedded in the thrown error, which `formatCkanError` returns to the tool result:\n\n```js\n} else {\n throw new CkanApiError(\n `CKAN API returned success=false: ${JSON.stringify(decodedData)}`, // full body reflected\n undefined,\n action\n );\n}\n```\n\n`src/worker.ts` \u2014 the catch-all handler returns the raw `Error.message` in the JSON-RPC `data` field:\n\n```js\nreturn new Response(JSON.stringify({\n jsonrpc: \u00272.0\u0027,\n error: { code: -32603, message: \u0027Internal error\u0027,\n data: error instanceof Error ? error.message : String(error) }, // raw internal message\n id: null\n}), { status: 500, ... });\n```\n\n## Impact\n\n- Reflects arbitrary upstream response content to the caller. Combined with the SSRF vectors (advisories #01/#06), an attacker can use this as the *read* channel: point the server at an internal endpoint and receive its body inside the `success=false` error string (turning otherwise-blind SSRF into a semi-blind/return-value SSRF for any host that reaches the guards).\n- Leaks internal operational detail via exception messages: node error codes and target addresses (e.g. `ECONNREFUSED 169.254.169.254:80`), which confirm internal reachability and infrastructure, and any stack/path fragments an upstream includes.\n- Aids reconnaissance and error-oracle attacks against the deployment.\n\nSeverity is Low on its own (the server holds no credentials of its own and sends no auth upstream), but it meaningfully amplifies the SSRF findings by providing a response-content channel.\n\n## Proof of concept\n\n`poc/error-disclosure-poc.mjs` reproduces both paths and shows an upstream body\n(containing a simulated DB error with an internal IP) and an internal\n`ECONNREFUSED 169.254.169.254` message being reflected to the caller.\n\n## Remediation\n\n- Return generic, action-scoped error messages to the caller; log the detailed\n upstream body/exception server-side only.\n- Do not embed `JSON.stringify(decodedData)` in caller-visible errors; cap and\n redact any reflected content.\n- In the Workers catch-all, omit `error.message` from the response `data` (or\n replace with a correlation id) in production.",
"id": "GHSA-6f9w-9hf2-5rg3",
"modified": "2026-09-03T14:49:10Z",
"published": "2026-09-03T14:49:10Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73844"
},
{
"type": "WEB",
"url": "https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5"
},
{
"type": "PACKAGE",
"url": "https://github.com/ondata/ckan-mcp-server"
},
{
"type": "WEB",
"url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "CKAN MCP Server: Information disclosure via verbose error reflection"
}
Mitigation MIT-40
Implementation
Build and Compilation
Strategy: Compilation or Build Hardening
Debugging information should not make its way into a production release.
Mitigation MIT-40
Implementation
Build and Compilation
Strategy: Environment Hardening
Debugging information should not make its way into a production release.
No CAPEC attack patterns related to this CWE.