CVE-2026-28394
MEDIUMOpenClaw < 2026.2.15 - Denial of Service via Unbounded Response Parsing in Web Fetch Tool
Title source: llmDescription
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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
https://github.com/openclaw/openclaw/security/advisories/GHSA-p536-vvpp-9mc8
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-response-parsing-in-web-fetch-tool
Scores
CVSS v3
6.5
EPSS
0.0039
EPSS Percentile
30.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (1)
openclaw/openclaw
< 2026.2.15
Published
Mar 05, 2026
Tracked Since
Mar 06, 2026