# CVE-2026-17434 — nanocoai NanoClaw

> As of 2026-07-27, CVE-2026-17434 is a MEDIUM-severity vulnerability in nanocoai NanoClaw, CVSS v3.1 6.3, EPSS 0.2% (11.9th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-17434 as of 2026-07-27; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-27

## What is CVE-2026-17434?

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.

The record classifies CVE-2026-17434 under weakness classes [CWE-285](https://intel.threadlinqs.com/cwe/CWE-285), [CWE-266](https://intel.threadlinqs.com/cwe/CWE-266). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 71 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.3 — MEDIUM (`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`)
- **CVSS v4.0 base score:** 5.3 (`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`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 11.9% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-26, last modified 2026-07-27

## Is CVE-2026-17434 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **nanocoai**: NanoClaw

## How to fix CVE-2026-17434

No vendor patch reference has been recorded for CVE-2026-17434 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-17434

No threat campaign in the Threadlinqs corpus currently references CVE-2026-17434, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-07-28.

**Vendor advisory and patch**

- [github.com — issue tracking](https://github.com/nanocoai/nanoclaw/pull/2998)
- [github.com — patch](https://github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8)

**Exploit and proof of concept**

- [github.com — exploit](https://github.com/nanocoai/nanoclaw/issues/2762)

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/383075)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/383075/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-17434)
- [vuldb.com — third party advisory (862451)](https://vuldb.com/submit/862451)

**Issue tracking and product pages**

- [github.com — product](https://github.com/nanocoai/nanoclaw/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-17434
Full detection coverage and IOCs for threats exploiting CVE-2026-17434 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp