CVE-2026-17434 (GCVE-0-2026-17434)
Vulnerability from cvelistv5 – Published: 2026-07-26 03:00 – Updated: 2026-07-27 14:37 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
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
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
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"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-17434\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-27T14:37:14.393084Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-27T14:37:19.965Z\"}}], \"cna\": {\"tags\": [\"x_open-source\"], \"title\": \"nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Erichen-x (VulDB User)\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.3, \"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\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 6.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 6.5, \"vectorString\": \"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C\"}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*\"], \"vendor\": \"nanocoai\", \"modules\": [\"add_mcp_server\"], \"product\": \"NanoClaw\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.0.0\"}, {\"status\": \"affected\", \"version\": \"2.0.1\"}, {\"status\": \"affected\", \"version\": \"2.0.2\"}, {\"status\": \"affected\", \"version\": \"2.0.3\"}, {\"status\": \"affected\", \"version\": \"2.0.4\"}, {\"status\": \"affected\", \"version\": \"2.0.5\"}, {\"status\": \"affected\", \"version\": \"2.0.6\"}, {\"status\": \"affected\", \"version\": \"2.0.7\"}, {\"status\": \"affected\", \"version\": \"2.0.8\"}, {\"status\": \"affected\", \"version\": \"2.0.9\"}, {\"status\": \"affected\", \"version\": \"2.0.10\"}, {\"status\": \"affected\", \"version\": \"2.0.11\"}, {\"status\": \"affected\", \"version\": \"2.0.12\"}, {\"status\": \"affected\", \"version\": \"2.0.13\"}, {\"status\": \"affected\", \"version\": \"2.0.14\"}, {\"status\": \"affected\", \"version\": \"2.0.15\"}, {\"status\": \"affected\", \"version\": \"2.0.16\"}, {\"status\": \"affected\", \"version\": \"2.0.17\"}, {\"status\": \"affected\", \"version\": \"2.0.18\"}, {\"status\": \"affected\", \"version\": \"2.0.19\"}, {\"status\": \"affected\", \"version\": \"2.0.20\"}, {\"status\": \"affected\", \"version\": \"2.0.21\"}, {\"status\": \"affected\", \"version\": \"2.0.22\"}, {\"status\": \"affected\", \"version\": \"2.0.23\"}, {\"status\": \"affected\", \"version\": \"2.0.24\"}, {\"status\": \"affected\", \"version\": \"2.0.25\"}, {\"status\": \"affected\", \"version\": \"2.0.26\"}, {\"status\": \"affected\", \"version\": \"2.0.27\"}, {\"status\": \"affected\", \"version\": \"2.0.28\"}, {\"status\": \"affected\", \"version\": \"2.0.29\"}, {\"status\": \"affected\", \"version\": \"2.0.30\"}, {\"status\": \"affected\", \"version\": \"2.0.31\"}, {\"status\": \"affected\", \"version\": \"2.0.32\"}, {\"status\": \"affected\", \"version\": \"2.0.33\"}, {\"status\": \"affected\", \"version\": \"2.0.34\"}, {\"status\": \"affected\", \"version\": \"2.0.35\"}, {\"status\": \"affected\", \"version\": \"2.0.36\"}, {\"status\": \"affected\", \"version\": \"2.0.37\"}, {\"status\": \"affected\", \"version\": \"2.0.38\"}, {\"status\": \"affected\", \"version\": \"2.0.39\"}, {\"status\": \"affected\", \"version\": \"2.0.40\"}, {\"status\": \"affected\", \"version\": \"2.0.41\"}, {\"status\": \"affected\", \"version\": \"2.0.42\"}, {\"status\": \"affected\", \"version\": \"2.0.43\"}, {\"status\": \"affected\", \"version\": \"2.0.44\"}, {\"status\": \"affected\", \"version\": \"2.0.45\"}, {\"status\": \"affected\", \"version\": \"2.0.46\"}, {\"status\": \"affected\", \"version\": \"2.0.47\"}, {\"status\": \"affected\", \"version\": \"2.0.48\"}, {\"status\": \"affected\", \"version\": \"2.0.49\"}, {\"status\": \"affected\", \"version\": \"2.0.50\"}, {\"status\": \"affected\", \"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\"}, {\"status\": \"affected\", \"version\": \"2.0.64\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-07-25T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-07-25T02:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-07-25T13:13:39.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/vuln/383075\", \"name\": \"VDB-383075 | nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/vuln/383075/cti\", \"name\": \"VDB-383075 | CTI Indicators (IOB, IOC, TTP, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/cve/CVE-2026-17434\", \"name\": \"CVE-2026-17434 | CVE Analysis and Report\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/submit/862451\", \"name\": \"Submit #862451 | NanoCoAI NanoClaw 2.0.64 Improper Authorization (CWE-285)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/issues/2762\", \"tags\": [\"exploit\", \"issue-tracking\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/pull/2998\", \"tags\": [\"issue-tracking\", \"patch\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/\", \"tags\": [\"product\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-285\", \"description\": \"Improper Authorization\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-266\", \"description\": \"Incorrect Privilege Assignment\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-07-26T03:00:16.981Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-17434\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-27T14:37:23.201Z\", \"dateReserved\": \"2026-07-25T11:08:25.395Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-07-26T03:00:16.981Z\", \"assignerShortName\": \"VulDB\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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