CVE-2026-28478CWE-770

OpenClaw < 2026.2.13 - Denial of Service via Unbounded Webhook Request Body Buffering

High · published March 5, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
57.5
In the wild
Unconfirmed
What it is

OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00842 · 57.5th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-03-05T21:59Z
EPSS history
Timeline
  • 05 MAR 21:59Z
    OpenClaw < 2026.2.13 - Denial of Service via Unbounded Webhook Request Body Buffering
    cvelistv5