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OpenClaw EUVDEUVD-2026-28178

| CVE-2026-43583 MEDIUM
Missing Authorization (CWE-862)
2026-05-06 disclosure@vulncheck.com
Authentication Bypass Openclaw
6.0
CVSS 4.0 · NVD
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NVD PRIMARY
6.0 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
May 06, 2026 - 21:03 EUVD
Source Code Evidence Fetched
May 06, 2026 - 20:36 vuln.today
Analysis Generated
May 06, 2026 - 20:36 vuln.today
CVE Published
May 06, 2026 - 20:16 nvd
MEDIUM 6.0

DescriptionCVE.org

OpenClaw versions 2026.4.10 before 2026.4.14 fail to persist session context during delivery queue recovery for media replay. Attackers can exploit recovered queued outbound media to bypass group tool policy enforcement and weaken channel media restrictions after service restart or recovery.

AnalysisAI

OpenClaw versions 2026.4.10 through 2026.4.13 fail to persist session context when recovering queued outbound media after service restart, allowing authenticated attackers to bypass group tool policy enforcement and weaken channel media restrictions. The vulnerability affects the delivery queue recovery mechanism, which replays queued messages without the original requester's session context needed for policy validation. Exploitation requires authenticated access and prior knowledge of queued delivery entries, with CVSS 6.0 and confirmed patch available in version 2026.4.14.

Technical ContextAI

OpenClaw is a Node.js/npm-based communication delivery platform that manages outbound media dispatch through a write-ahead delivery queue. The vulnerability resides in the session context persistence layer across three modules: delivery-queue-storage.ts (queue persistence), delivery-queue-recovery.ts (queue replay), and deliver.ts (media transmission). The root cause is CWE-862 (Missing Authorization), manifesting as missing session context fields during delivery queue recovery. When messages are queued for delivery, the originating OutboundSessionContext object-containing requesterAccountId, requesterSenderId, agentId, and sender metadata-is not persisted to the queue storage. During recovery after restart, the queued entries are replayed without this context, causing policy checks that depend on session identity to fail or be skipped, effectively removing authorization controls that restrict which media types can be sent per group policy. The fix adds optional session field to QueuedDeliveryPayload type and propagates it through enqueueDelivery, buildRecoveryDeliverParams, and deliverOutboundPayloads functions.

RemediationAI

Upgrade OpenClaw to version 2026.4.14 or later immediately. Users can execute npm update openclaw@2026.4.14 or npm install openclaw@2026.4.14 to obtain the patched version, which includes PR #66025 that adds session context persistence to the delivery queue. Organizations unable to upgrade immediately should implement compensating controls: disable automatic queue recovery after unplanned restarts by setting recovery mode to manual-only (trade-off: queued messages may not deliver until explicit recovery is initiated); restrict access to queue storage files to prevent unauthorized queue manipulation; implement per-message audit logging of delivery queue recovery events to detect policy-bypass attempts; or temporarily disable group tool policy for media channels and enforce policies at application boundary until upgrade is complete. The fix is confirmed in commit 48aae82bbc19ba8b0741e61a08063eb0d1df464e. For detailed advisory, see https://www.vulncheck.com/advisories/openclaw-loss-of-group-tool-policy-context-in-delivery-queue-recovery.

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EUVD-2026-28178 vulnerability details – vuln.today
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