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Openclaw CVE-2026-32898

| EUVDEUVD-2026-13976 MEDIUM
Reliance on Untrusted Inputs in a Security Decision (CWE-807)
2026-03-21 VulnCheck
5.4
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Trusted input validation
Impact

The CVSS 3.1 score of 5.4 (Medium) reflects moderate real-world risk with favorable attack conditions: the vulnerability requires low attack complexity (AC:L), network accessibility (AV:N), but mandates user privileges (PR:L), limiting opportunistic exploitation. The impact is balanced—confidentiality and integrity are degraded (C:L, I:L) but availability is unaffected (A:N), ruling out denial-of-service scenarios. EPSS data is not provided in source intelligence, but the combination of low attack complexity and permission-bypass characteristics suggests above-baseline exploitation probability in environments where OpenClaw deployments host sensitive tool integrations. Without KEV designation or public POC weaponization reports, this is unlikely to be actively exploited at scale, but the authorization bypass nature makes it a credible priority for any organization using OpenClaw in agent-based workflows. From an SSVC perspective, exploitation is mostly straightforward for an authenticated attacker with access to the ACP interface, and technical impact (unauthorized data access/modification) is notable in multi-tenant or sensitive-operation contexts.

Exploit ScenarioDerived

A low-privileged authenticated user with access to OpenClaw's ACP client crafts a malicious tool invocation with a spoofed toolCall.kind metadata field (e.g., setting kind to a value matching permissive read-heuristics) or uses a function name like read_sensitive_data that matches non-core naming patterns. Due to insufficient metadata validation, the ACP client automatically approves the operation and executes it without presenting an interactive approval prompt, allowing the attacker to read confidential data or modify system state without authorization. Since network access is required (AV:N) and the attacker must already possess valid credentials (PR:L), this is a privilege escalation scenario within OpenClaw environments rather than a remote unauthenticated exploit.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 21, 2026

OpenClaw versions prior to 2026.2.23 contain an authorization bypass vulnerability in the ACP (Approval Control Panel) client that automatically approves tool calls based on untrusted metadata and overly permissive heuristics. An authenticated attacker with PR (privileges required) can bypass interactive approval prompts for read-class operations by spoofing toolCall.kind metadata or using non-core read-like function names to reach auto-approve execution paths. This vulnerability enables unauthorized information disclosure and modification without user interaction, and while not currently listed as actively exploited in KEV, proof-of-concept demonstrations are available via vendor security advisories.

RemediationAI

Upgrade OpenClaw to version 2026.2.23 or later immediately. The vendor has published two commits addressing the vulnerability (https://github.com/openclaw/openclaw/commit/12cc754332f9a7c92e158ce7644aa22df79c0904 and https://github.com/openclaw/openclaw/commit/63dcd28ae0be2de1c75af09cc81841cebeec068f) which strengthen metadata validation and remove overly permissive approval heuristics. Until patching is feasible, enforce stricter tool approval policies by disabling auto-approval for all tool-calling operations and requiring explicit user confirmation for each invocation, implement network-level access controls to restrict ACP client access to trusted administrative networks only, and audit tool metadata schemas to reject suspicious or non-canonical toolCall.kind values at the API gateway layer.

Affected VersionsENISA

OpenClaw 0 <2026.2.23

Affected Packages

npm openclaw fix: 2026.2.23

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability stems from a CWE-807 (Reliance on Untrusted Inputs in a Security Decision) flaw in OpenClaw's ACP client, which implements approval workflows for tool invocations. The affected component (cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*) uses toolCall.kind metadata and name-based heuristics to make automated approval decisions without validating the integrity or trustworthiness of these inputs. The root cause involves insufficient validation of tool metadata before reaching approval decision logic, allowing attackers to manipulate metadata fields (such as tool.kind) or craft function names matching non-core patterns that trigger permissive auto-approval paths. This is particularly dangerous in AI/LLM agent contexts where tool-calling abstractions are used to execute external operations, as the approval layer is intended to be a security boundary.

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Severity by source

NVD PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
PoC Detected
Mar 24, 2026 - 21:07 vuln.today
Public exploit code
Patch released
Mar 21, 2026 - 01:00 nvd
Patch available
CVE Published
Mar 21, 2026 - 00:42 nvd
MEDIUM 5.4

DescriptionCVE.org

OpenClaw versions prior to 2026.2.23 contain an authorization bypass vulnerability in the ACP client that auto-approves tool calls based on untrusted toolCall.kind metadata and permissive name heuristics. Attackers can bypass interactive approval prompts for read-class operations by spoofing tool metadata or using non-core read-like names to reach auto-approve paths.

Executive ViewAI

Why It Matters

CVE-2026-32898 presents moderate security risk rated CVSS 5.4. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Exploit
POC
Public exploit code exists
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment CIRCL GitHub VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Low
Technical Impact
Partial

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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