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mediumCVSS 6.5NVD status: Analyzed

CVE-2026-28394

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 H...

ComponentOpenClaw
Severitymedium (CVSS 6.5)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published (NVD)2026-03-05
Last modified2026-06-17
Affected versions
openclaw < 2026.2.15
Fixed in2026.2.15
WeaknessCWE-770
CISA KEVnot listed

NVD 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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What to do

  • Upgrade OpenClaw to 2026.2.15 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

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