CVE-2026-17434 (GCVE-0-2026-17434)
Vulnerability from cvelistv5 – Published: 2026-07-26 03:00 – Updated: 2026-07-26 03:00 X_Open Source
VLAI
EPSS
VEX
Title
nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization
Summary
A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue.
Severity
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/383075 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/383075/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-17434 | third-party-advisory |
| https://vuldb.com/submit/862451 | third-party-advisory |
| https://github.com/nanocoai/nanoclaw/issues/2762 | exploitissue-tracking |
| https://github.com/nanocoai/nanoclaw/pull/2998 | issue-trackingpatch |
| https://github.com/nanocoai/nanoclaw/commit/e5b92… | patch |
| https://github.com/nanocoai/nanoclaw/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nanocoai | NanoClaw |
Affected:
2.0.0
Affected: 2.0.1 Affected: 2.0.2 Affected: 2.0.3 Affected: 2.0.4 Affected: 2.0.5 Affected: 2.0.6 Affected: 2.0.7 Affected: 2.0.8 Affected: 2.0.9 Affected: 2.0.10 Affected: 2.0.11 Affected: 2.0.12 Affected: 2.0.13 Affected: 2.0.14 Affected: 2.0.15 Affected: 2.0.16 Affected: 2.0.17 Affected: 2.0.18 Affected: 2.0.19 Affected: 2.0.20 Affected: 2.0.21 Affected: 2.0.22 Affected: 2.0.23 Affected: 2.0.24 Affected: 2.0.25 Affected: 2.0.26 Affected: 2.0.27 Affected: 2.0.28 Affected: 2.0.29 Affected: 2.0.30 Affected: 2.0.31 Affected: 2.0.32 Affected: 2.0.33 Affected: 2.0.34 Affected: 2.0.35 Affected: 2.0.36 Affected: 2.0.37 Affected: 2.0.38 Affected: 2.0.39 Affected: 2.0.40 Affected: 2.0.41 Affected: 2.0.42 Affected: 2.0.43 Affected: 2.0.44 Affected: 2.0.45 Affected: 2.0.46 Affected: 2.0.47 Affected: 2.0.48 Affected: 2.0.49 Affected: 2.0.50 Affected: 2.0.51 Affected: 2.0.52 Affected: 2.0.53 Affected: 2.0.54 Affected: 2.0.55 Affected: 2.0.56 Affected: 2.0.57 Affected: 2.0.58 Affected: 2.0.59 Affected: 2.0.60 Affected: 2.0.61 Affected: 2.0.62 Affected: 2.0.63 Affected: 2.0.64 cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:* |
Credits
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*"
],
"modules": [
"add_mcp_server"
],
"product": "NanoClaw",
"vendor": "nanocoai",
"versions": [
{
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{
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{
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{
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{
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{
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{
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{
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"version": "2.0.49"
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{
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{
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"version": "2.0.51"
},
{
"status": "affected",
"version": "2.0.52"
},
{
"status": "affected",
"version": "2.0.53"
},
{
"status": "affected",
"version": "2.0.54"
},
{
"status": "affected",
"version": "2.0.55"
},
{
"status": "affected",
"version": "2.0.56"
},
{
"status": "affected",
"version": "2.0.57"
},
{
"status": "affected",
"version": "2.0.58"
},
{
"status": "affected",
"version": "2.0.59"
},
{
"status": "affected",
"version": "2.0.60"
},
{
"status": "affected",
"version": "2.0.61"
},
{
"status": "affected",
"version": "2.0.62"
},
{
"status": "affected",
"version": "2.0.63"
},
{
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}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Erichen-x (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue."
}
],
"metrics": [
{
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
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}
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{
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}
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{
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{
"cvssV2_0": {
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"problemTypes": [
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"description": "Improper Authorization",
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},
{
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{
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},
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{
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"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-07-25T13:13:39.000Z",
"value": "VulDB entry last update"
}
],
"title": "nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-17434",
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"dateReserved": "2026-07-25T11:08:25.395Z",
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A patch should be applied to remediate this 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oviderUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":6.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":3.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:P/A:P\",\"baseScore\":6.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-266\"},{\"lang\":\"en\",\"value\":\"CWE-285\"}]}],\"references\":[{\"url\":\"https://github.com/nanocoai/nanoclaw/\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/nanocoai/nanoclaw/issues/2762\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/nanocoai/nanoclaw/pull/2998\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/cve/CVE-2026-17434\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/862451\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/383075\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/383075/cti\",\"source\":\"cna@vuldb.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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