OpenClaw has pre-auth webhook body parsing that can enable unauthenticated slow-request DoS

高 7.5CVE-2026-32011 · GHSA-x4vp-4235-65hg · 19/03/2026 公開 · 17/06/2026 更新

要点

CVE-2026-32011 は openclaw (openclaw), openclaw に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.42%（全脆弱性の 36.4% より高い）。
対処：2026.3.2 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
openclaw openclaw	`< 2026.3.2`	`2026.3.2`
openclaw npm	`< 2026.3.2`	`2026.3.2`

概要

Impact

OpenClaw webhook handlers for BlueBubbles and Google Chat accepted and parsed request bodies before authentication and signature checks on vulnerable releases. This allowed unauthenticated clients to hold parser work open with slow/oversized request bodies and degrade availability (slow-request DoS).

Affected Packages / Versions

Package: openclaw (npm)
Affected releases: <= 2026.3.1
Latest published vulnerable version at triage time: 2026.3.1 (npm)
Fixed release: 2026.3.2 (released)

Fix Commit(s)

d3e8b17aa6432536806b4853edc7939d891d0f25

Mitigation

Upgrade to 2026.3.2 (or newer). The fix enforces auth-before-body for affected webhook paths, adds strict pre-auth body/time budgets, and introduces shared in-flight/request guardrails with regression coverage.

NVD の説明

OpenClaw versions prior to 2026.3.2 contain a denial of service vulnerability in webhook handlers for BlueBubbles and Google Chat that parse request bodies before performing authentication and signature validation. Unauthenticated attackers can exploit this by sending slow or oversized request bodies to exhaust parser resources and degrade service availability.