CVE-2026-17434: nanocoai NanoClaw

nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization

CVSS 5.3 MediumEPSS 0.0037 · 31st percentile

Published by the CVE Program (CNA: VulDB) at 26 Jul 2026, 03:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
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 and 53 more

Identifiers

CVE-2026-17434

CNA

VulDB

Weakness (CWE)

CWE-266 · CWE-285

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	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	CNA (VulDB)Used for this record
6.3	Medium	3.1	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	CNA (VulDB)
6.3	Medium	3.0	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	CNA (VulDB)
6.5	Medium	2.0	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0037, the 31st percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/383075 vdb-entrytechnical-description
vuldb.com/vuln/383075/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-17434 third-party-advisory
vuldb.com/submit/862451 third-party-advisory
github.com/nanocoai/nanoclaw/pull/2998 issue-trackingpatch
github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8 patch
github.com/nanocoai/nanoclaw/ product
github.com/nanocoai/nanoclaw/issues/2762 exploitissue-tracking

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.