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Openclaw CVE-2026-35648

| EUVDEUVD-2026-21442 LOW
Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)
2026-04-10 VulnCheck
2.3
CVSS 4.0 · NVD
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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture TOCTOU prevention
Impact

The CVSS score of 3.7 reflects low real-world severity despite the authentication-bypass classification tag. The vector (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N) indicates network-accessible attack surface with high complexity and no authentication barrier, but limited impact (integrity only, no confidentiality or availability loss). The high attack complexity requirement suggests that successful exploitation depends on specific conditions: timing the attack with policy transitions, understanding the queuing mechanism, and having actionable commands already pending. No public exploit code has been identified, no active exploitation is confirmed via CISA KEV, and EPSS probability of exploitation is not provided. The practical risk is constrained to environments where command policies are frequently adjusted and operators rely on policy changes as a rapid access revocation mechanism. This is a legitimate but specialized threat requiring defenders to implement queue flushing or revalidation on policy changes rather than a systemic flaw affecting all installations.

Exploit ScenarioDerived

An administrator configures OpenClaw to queue a batch of node commands for delayed execution, then later revokes access to sensitive operations and tightens the command policy. The attacker exploits the time window between policy restriction and command delivery: the queued commands reference an allowlist or policy declaration that was valid when queued but is now revoked. Because the system does not revalidate at delivery time, the commands execute despite the new policy, allowing an attacker to perform an action they should no longer have authorization for. Successful exploitation requires knowledge of pending queued actions and precise timing around policy changes, explaining the high attack complexity rating. No public proof-of-concept or active exploitation in the wild has been confirmed.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 10, 2026

OpenClaw before version 2026.3.22 allows policy bypass through unvalidated queued node actions, enabling attackers to execute unauthorized commands by exploiting stale allowlists or policy declarations that persist after policy changes. The vulnerability requires network access and high attack complexity but no authentication, resulting in integrity impact without exposing confidentiality or availability. No public exploit code or active exploitation has been confirmed.

RemediationAI

Vendor-released patch: OpenClaw 2026.3.22 or later. Users should upgrade immediately to the patched version. Two upstream commits (630f1479c44f78484dfa21bb407cbe6f171dac87 and ec2c6d83b9f5f91d6d9094842e0f19b88e63e3e2) document the fixes; these commits enforce revalidation of queued node actions against the current policy state before delivery. As a temporary workaround pending upgrade, administrators should flush or manually review pending queued actions whenever command policies are tightened, and implement process controls to verify that policy changes are applied to in-flight requests. Details are available in the GitHub security advisory at https://github.com/openclaw/openclaw/security/advisories/GHSA-wj55-88gf-x564 and the VulnCheck advisory at https://www.vulncheck.com/advisories/openclaw-policy-bypass-via-unvalidated-queued-node-actions.

Affected VersionsENISA

OpenClaw 0 <2026.3.22

Affected Packages

npm openclaw fix: 2026.3.22

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

OpenClaw is a command execution and policy enforcement framework that manages node actions through a queuing mechanism. The vulnerability stems from CWE-367 (Time-of-check Time-of-use race condition), where queued actions are delivered without revalidation against the current command policy state. When administrators tighten access policies, previously queued commands may reference allowlists or policy declarations that no longer reflect the current security posture. The affected component (CPE: cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*) fails to validate queued node actions at execution time, allowing commands that should have been blocked by updated policies to proceed. This represents a logic flaw in the policy enforcement mechanism rather than a cryptographic or network protocol weakness.

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Severity by source

NVD PRIMARY 2.3 LOW
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
Low
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch released
Apr 10, 2026 - 16:30 nvd
Patch available
CVE Published
Apr 10, 2026 - 16:03 nvd
LOW 2.3

DescriptionCVE.org

OpenClaw before 2026.3.22 contains a policy bypass vulnerability where queued node actions are not revalidated against current command policy when delivered. Attackers can exploit stale allowlists or declarations that survive policy tightening to execute unauthorized commands.

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 5 npm packages depend on openclaw (5 direct, 0 indirect)

Ecosystem-wide dependent count for version 2026.3.22.

Threat Intelligence Overview

EPSS Score
0.0%
Top 93% exploitable
Data Quality
7 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 LOW
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
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· derived
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

12
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +12
PoC: 0
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.

CVE-2026-28446 CRITICAL POC
9.4 Mar 05

Auth bypass in OpenClaw voice-call extension before 2026.2.1. EPSS 0.68%. PoC and patch available.

CVE-2026-33579 CRITICAL POC
9.4 Mar 31

Privilege escalation in OpenClaw (pre-2026.3.28) allows unauthenticated remote attackers to gain administrative access b

CVE-2026-32042 HIGH POC
8.8 Mar 21

OpenClaw versions 2026.2.22 through 2026.2.24 contain a privilege escalation vulnerability that allows authenticated att

CVE-2026-32051 HIGH POC
8.8 Mar 21

An authorization mismatch vulnerability in OpenClaw versions prior to 2026.3.1 allows authenticated users with operator.

CVE-2026-25253 HIGH POC
8.8 Feb 01

OpenClaw versions prior to 2026.1.29 automatically establish WebSocket connections to attacker-controlled gateway URLs e

CVE-2026-32846 HIGH POC
8.7 Mar 26

Path traversal in OpenClaw through version 2026.3.23 enables unauthenticated remote attackers to read arbitrary files in

CVE-2026-53857 HIGH POC
8.6 Jun 16

Authentication bypass in OpenClaw before 2026.5.3 allows remote attackers with low privileges to receive agent responses

CVE-2026-100530 HIGH POC
8.5 Sep 26

Directory-context bypass in OpenClaw before 2026.8.1 allows authenticated attackers with user interaction to reuse an 'a

CVE-2026-32064 HIGH POC
8.5 Mar 21

Unauthenticated access to the noVNC observer interface in OpenClaw's Docker sandbox browser allows anyone who can reach

CVE-2026-32055 HIGH POC
7.6 Mar 21

OpenClaw versions before 2026.2.26 allow authenticated attackers to write arbitrary files outside the workspace director

CVE-2026-32056 HIGH POC
7.5 Mar 21

OpenClaw versions prior to 2026.2.22 contain a shell environment variable injection vulnerability in the system.run func

CVE-2026-32049 HIGH POC
7.5 Mar 21

OpenClaw versions prior to 2026.2.22 contain a resource exhaustion vulnerability where the application fails to consiste

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