Moderate severityNVD Advisory· Published Mar 5, 2026· Updated Mar 11, 2026
OpenClaw < 2026.2.15 - Denial of Service via Unbounded Response Parsing in web_fetch Tool
CVE-2026-28394
Description
OpenClaw versions prior to 2026.2.15 contain a denial of service vulnerability in the web_fetch tool that allows attackers to crash the Gateway process through memory exhaustion by parsing oversized or deeply nested HTML responses. Remote attackers can social-engineer users into fetching malicious URLs with pathological HTML structures to exhaust server memory and cause service unavailability.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.2.15 | 2026.2.15 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/openclaw/openclaw/commit/166cf6a3e04c7df42bea70a7ad5ce2b9df46d147ghsapatchWEB
- github.com/advisories/GHSA-p536-vvpp-9mc8ghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-p536-vvpp-9mc8ghsavendor-advisoryWEB
- www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-response-parsing-in-web-fetch-toolmitrethird-party-advisory
- github.com/openclaw/openclaw/releases/tag/v2026.2.15ghsaWEB
News mentions
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