OpenClaw < 2026.3.22 - Unbounded Memory Allocation via Remote Media Error Responses
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-789.
Summary
OpenClaw before 2026.3.22 contains an unbounded memory allocation vulnerability in remote media HTTP error handling that allows attackers to trigger excessive memory consumption. Attackers can send crafted HTTP error responses with large bodies to remote media endpoints, causing the application to allocate unbounded memory before failure handling occurs.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | OpenClaw | before 2026.3.22 | 2026.3.22 | Patch available | CNA |
| — | openclaw (npm) | before 2026.3.22 | 2026.3.22 | Patch available | GHSA-4qwc-c7g9-4xcw |
- OpenClaw VendorOpenClaw Affected before 2026.3.22 Fixed in 2026.3.22 Patch available CNA
- openclaw (npm) Vendor— Affected before 2026.3.22 Fixed in 2026.3.22 Patch available GHSA-4qwc-c7g9-4xcw
Remediation
- Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.3.22
- Fix · GHSA-4qwc-c7g9-4xcw openclaw (npm) Fixed in 2026.3.22 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenClaw 2026.3.22
11 records Highest priority Priority MEDIUM 1 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2026-27740 OpenClaw < 2026.3.22 - Privilege Escalation via device.pair.approve Scope ValidationPriority MEDIUM 40
- TI-2026-27739 OpenClaw < 2026.3.22 - Privilege Escalation via Self-Declared Scopes in Trusted-Proxy Control UIPriority LOW 39
- TI-2026-27728 OpenClaw < 2026.3.22 - Unauthenticated Cryptographic Work in Nostr Inbound DM HandlingPriority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2026-35633
- 2026-10-03 Alias added: GHSA-4qwc-c7g9-4xcw
- 2026-10-09 EPSS moved to the 50th–90th percentile
- 2026-10-25 EPSS moved to the below the 50th percentile
References
More Openclaw vulnerabilities
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
- TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
- TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
- TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
- TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
- TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
Sources
- CVE-2026-35633 · CVE Program
- CVE-2026-35633 · NVD
- FIRST EPSS
- GHSA-4qwc-c7g9-4xcw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences