CVE-2026-43534
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOpenClaw before 2026.4.10 contains an input validation vulnerability that allows external hook metadata to be enqueued as trusted system events. Attackers can supply malicious hook names to escalate untrusted input into higher-trust agent context.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceOpenClaw before version 2026.4.10 fails to validate external hook metadata before enqueuing it as trusted system events. Attackers can supply malicious hook names that bypass trust boundaries, escalating untrusted input into higher-trust agent context.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2026.4.10CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check OpenClaw installed versionRun 'openclaw --version' or check the package manifest to determine the currently installed version of OpenClawAffected if Version is less than 2026.4.10
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Verify hook processing is enabledInspect the OpenClaw configuration file (commonly in /etc/openclaw/ or ~/.openclaw/) for settings related to external hooks, plugins, or event handlersAffected if Hook processing or external event handling is enabled in the configuration
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Examine hook metadata validation settingsReview the OpenClaw configuration for any input validation or allowlisting settings related to hook names and external event metadataAffected if No strict input validation or allowlisting for hook names is configured
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Inspect registered hook definitionsCheck the hooks directory (typically /etc/openclaw/hooks/ or ~/.openclaw/hooks/) for any external hook definitions or metadata filesAffected if External hooks are registered and the application processes them as system events
You are affected if OpenClaw version is below 2026.4.10 AND external hook/event processing is enabled, as the unvalidated hook metadata can be leveraged to escalate untrusted input into higher-trust contexts.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2026.4.10
Upgrade to OpenClaw version 2026.4.10 or later which implements proper input validation for hook metadata. If immediate upgrade is not possible, implement input sanitization for all hook event parameters at entry points.
2026.4.10
- 1. Identify your current OpenClaw installation by running 'openclaw --version' or checking your package manager
- 2. Create a backup of your current configuration and data directory
- 3. Upgrade OpenClaw to version 2026.4.10 or later using your package manager or by pulling the updated container/image
- 4. Verify the upgrade was successful by running 'openclaw --version' and confirming it shows 2026.4.10 or higher
- 5. Review system logs after upgrade to ensure the application is functioning correctly
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-43534 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-43534 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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