Openclaw cli: OpenClaw: Remote media error responses could trigger unbounded memory allocation before failure (CVE-2026-35633)
Description
OpenClaw CLI versions prior to 2026.3.22 have a vulnerability where remote media HTTP error responses are read without a hard size limit, allowing unbounded memory allocation before failure handling. This issue was fixed in version 2026.3.22 by enforcing capped reads and truncating oversized error bodies.
CVSS v4.0
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The OpenClaw CLI package (npm) versions before 2026.3.22 improperly handle HTTP error responses from remote media by reading the error bodies without a strict size cap. This can lead to unbounded memory allocation during error processing. The vulnerability was addressed in commit 81445a901091a5d27ef0b56fceedbe4724566438, which introduced bounded prefix reads and truncated oversized error snippets to prevent excessive memory use. The fix is present in versions 2026.3.22 and later.
Potential Impact
An attacker causing HTTP error responses with large bodies could trigger unbounded memory allocation in the vulnerable OpenClaw CLI versions, potentially leading to denial of service due to resource exhaustion. There is no indication of code execution or data leakage from the provided information.
Mitigation Recommendations
Upgrade OpenClaw CLI to version 2026.3.22 or later, where the vulnerability is fixed by enforcing capped reads on error response bodies. No other mitigation is required as the fix is available and included in current releases.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BREW-openclaw-cli-CVE-2026-35633
- Osv Schema Version
- 1.7.3
- Ecosystems
- ["Homebrew"]
- Cvss Version
- 4.0
Threat ID: 6ac245d812601ec6a316809f
Added to database: 10/04/2026, 12:26:00 UTC
Last enriched: 10/04/2026, 13:20:05 UTC
Last updated: 10/04/2026, 16:08:37 UTC
Views: 2
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