CVE-2026-35633: OpenClaw Remote Media Error Responses Could Vulnerability

HIGH
Advisory Identifier: GHSA-4qwc-c7g9-4xcw
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CWE-400 CWE-770
Published
Advisory Summary

CVE-2026-35633 is a HIGH remote media error responses could vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting OpenClaw libraries in the npm ecosystem. The issue involves remote media error responses could trigger unbounded memory allocation before failure. Remediation is available by upgrading affected packages to version 2026.3.22.

CVE-2026-35633 at a Glance

CVE Identifier CVE-2026-35633
GHSA Identifier GHSA-4qwc-c7g9-4xcw
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-35633

To remediate this vulnerability, upgrade all affected OpenClaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openclaw fixed: 2026.3.22 
npm install openclaw@2026.3.22
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls openclaw

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-35633, inspect your project dependencies using npm:

npm ls openclaw

Analyze the terminal output to locate any version of OpenClaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.3.22), your application is affected.

Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In OpenClaw, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary Remote media HTTP error bodies were read without a hard size cap before failure handling, allowing unbounded allocation on error responses. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected: < 2026.3.22 - Fixed: >= 2026.3.22 - Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`) - Latest published npm version checked: `2026.3.23-2` ## Fix Commit(s) - `81445a901091a5d27ef0b56fceedbe4724566438` ## Release Status The fix shipped in `v2026.3.22` and remains present in `v2026.3.23` and `v2026.3.23-2`. ## Code-Level Confirmation - src/media/fetch.ts now routes non-2xx failures through bounded prefix reads instead of buffering the whole error body. - src/media/read-response-with-limit.ts enforces capped reads and truncates oversized snippets before surfacing failure text. OpenClaw thanks @YLChen-007 for reporting.

CVE-2026-35633 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.3.22
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.3.22
2026.3.22

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-4qwc-c7g9-4xcw
NVD — CVE-2026-35633 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35633
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/81445a901091a5d27ef0b56fceedbe4724566438
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-unbounded-memory-allocation-via-remote-media-error-responses

Frequently Asked Questions

What is CVE-2026-35633?
CVE-2026-35633 is a security vulnerability in OpenClaw involving Remote media error responses could trigger unbounded memory allocation before failure under CWE-400: Uncontrolled Resource Consumption.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.3.22 across affected packages: openclaw.
What version fixes CVE-2026-35633?
Upgrading to 2026.3.22 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.3.22. Upgrade your dependency to 2026.3.22 or later.
What CWE is associated with CVE-2026-35633?
CVE-2026-35633 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2026-35633?
Run the dependency tree command: 'npm ls openclaw'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4qwc-c7g9-4xcw",
  "modified" : "2026-04-10T20:19:35Z",
  "published" : "2026-03-26T19:50:06Z",
  "aliases" : [ "CVE-2026-35633" ],
  "summary" : "OpenClaw: Remote media error responses could trigger unbounded memory allocation before failure",
  "details" : "## Summary\nRemote media HTTP error bodies were read without a hard size cap before failure handling, allowing unbounded allocation on error responses.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected: < 2026.3.22\n- Fixed: >= 2026.3.22\n- Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`)\n- Latest published npm version checked: `2026.3.23-2`\n\n## Fix Commit(s)\n- `81445a901091a5d27ef0b56fceedbe4724566438`\n\n## Release Status\nThe fix shipped in `v2026.3.22` and remains present in `v2026.3.23` and `v2026.3.23-2`.\n\n## Code-Level Confirmation\n- src/media/fetch.ts now routes non-2xx failures through bounded prefix reads instead of buffering the whole error body.\n- src/media/read-response-with-limit.ts enforces capped reads and truncates oversized snippets before surfacing failure text.\n\nOpenClaw thanks @YLChen-007 for reporting.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.3.22"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-4qwc-c7g9-4xcw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35633"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/81445a901091a5d27ef0b56fceedbe4724566438"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-unbounded-memory-allocation-via-remote-media-error-responses"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-26T19:50:06Z",
    "nvd_published_at" : null
  }
}