CVE-2026-18991 (GCVE-0-2026-18991)
Vulnerability from cvelistv5 – Published: 2026-08-06 02:30 – Updated: 2026-08-06 14:52
VLAI
EPSS
VEX
Title
nanocoai NanoClaw send_file core.ts path traversal
Summary
A security vulnerability has been detected in nanocoai NanoClaw up to 2.0.64. This affects an unknown part of the file container/agent-runner/src/mcp-tools/core.ts of the component send_file. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Path Traversal
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/386367 | vdb-entry |
| https://vuldb.com/vuln/386367/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-18991 | third-party-advisory |
| https://vuldb.com/submit/862563 | third-party-advisory |
| https://github.com/nanocoai/nanoclaw/issues/2760 | exploitissue-tracking |
| 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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{\"version\": \"3.1\", \"baseScore\": 7.3, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 7.3, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 7.5, \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*\"], \"vendor\": \"nanocoai\", \"modules\": [\"send_file\"], \"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\": \"2026-08-05T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-08-05T02:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-08-05T21:54:47.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/vuln/386367\", \"name\": \"VDB-386367 | nanocoai NanoClaw send_file core.ts path traversal\", \"tags\": [\"vdb-entry\"]}, {\"url\": \"https://vuldb.com/vuln/386367/cti\", \"name\": \"VDB-386367 | CTI Indicators (IOB, IOC, TTP, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/cve/CVE-2026-18991\", \"name\": \"CVE-2026-18991 | CVE Analysis and Report\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/submit/862563\", \"name\": \"Submit #862563 | nanocoai NanoClaw 2.0.64 Improper Limitation of a Pathname to a Restricted Directory (CWE-22)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/issues/2760\", \"tags\": [\"exploit\", \"issue-tracking\"]}, {\"url\": \"https://github.com/nanocoai/nanoclaw/\", \"tags\": [\"product\"]}], \"x_generator\": [\"VulDB PVTS v202608\"], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A security vulnerability has been detected in nanocoai NanoClaw up to 2.0.64. This affects an unknown part of the file container/agent-runner/src/mcp-tools/core.ts of the component send_file. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"Path Traversal\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-08-06T02:30:13.116Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-18991\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-06T14:52:17.359Z\", \"dateReserved\": \"2026-08-05T18:48:40.561Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-08-06T02:30:13.116Z\", \"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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