GHSA-p536-vvpp-9mc8

Source

https://github.com/advisories/GHSA-p536-vvpp-9mc8

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-p536-vvpp-9mc8/GHSA-p536-vvpp-9mc8.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-p536-vvpp-9mc8

Aliases

CVE-2026-28394

Published

2026-02-19T19:40:56Z

Modified

2026-03-05T21:42:20Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator

Summary

OpenClaw has a Web Fetch DoS via unbounded response parsing

Details

Summary

The web_fetch tool could be used to crash the OpenClaw Gateway process (OOM / resource exhaustion) by fetching and attempting to parse attacker-controlled web pages with oversized response bodies or pathological HTML nesting.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <= 2026.2.14
Fixed versions: >= 2026.2.15

Impact

An attacker can social-engineer a user (or any automation that uses web_fetch) into fetching a malicious URL that returns extremely large or deeply nested HTML. The Gateway may exhaust memory or become unresponsive, causing a denial of service.

Fix

The Gateway now caps the downloaded response body size before any HTML parsing and adds additional guards to avoid running Readability/DOM parsing on pathological HTML.

Fix Commit(s)

166cf6a3e04c7df42bea70a7ad5ce2b9df46d147

Release Process Note

This advisory is prepared for the next npm release. Once openclaw@2026.2.15 is published, publish this advisory without further edits.

Thanks @xuemian168 for reporting.

Database specific

{
    "severity": "MODERATE",
    "cwe_ids": [
        "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-19T19:40:56Z",
    "nvd_published_at": null
}

References

Affected packages

npm / openclaw

Package

Name: openclaw; View open source insights on deps.dev
Purl: pkg:npm/openclaw

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2026.2.15

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-p536-vvpp-9mc8/GHSA-p536-vvpp-9mc8.json"