NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler (CVE-2026-56402) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-56402

NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler

Answer in brief

CVE-2026-56402 records a Medium severity (CVSS 6.5) vulnerability in NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler. The current sources do not mark it as known exploited. The current feed maps nanocoai/nanoclaw (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 23, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Jun 23, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps nanocoai/nanoclaw (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
nanocoai/nanoclawgeneric	>=0 <2.1.17	2.1.17

Recommended response

Check inventory. Check lockfiles and deployed manifests for nanocoai/nanoclaw.
Review the reported fix. Update nanocoai/nanoclaw to 2.1.17 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 23, 2026

Sources and claim methodology

Upstream source description

NanoClaw before 2.1.17 contains a privilege escalation vulnerability in the handleApprovalsResponse function that fails to verify responder role authorization. Attackers with a valid questionId can approve or reject privileged actions like package installation by submitting approval response payloads without proper role validation.

Quoted source text, attributed separately from HOL analysis.