OpenClaw: `fetchWithSsrFGuard` replays unsafe request bodies across cross-origin redirects

中 6.5CVE-2026-40037 · GHSA-qx8j-g322-qj6m · 08/04/2026 公開 · 29/10/2026 更新

要点

CVE-2026-40037 は openclaw (openclaw), openclaw に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.30%（全脆弱性の 23.3% より高い）。
対処：2026.4.8 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	`< 2026.4.8`	`2026.4.8`
openclaw npm	`< 2026.4.8`	`2026.4.8`

概要

Impact

fetchWithSsrFGuard replays unsafe request bodies across cross-origin redirects.

A guarded fetch could resend unsafe request bodies or headers when following cross-origin redirects.

OpenClaw is a user-controlled local assistant. This advisory is scoped to the OpenClaw trust model and does not assume a multi-tenant service boundary.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <2026.3.31
Patched versions: 2026.4.8

Fix

The issue was fixed on main and is available in the patched npm version listed above. The verified fixed tree is commit d7c3210cd6f5fdfdc1beff4c9541673e814354d5.

Verification

The fix was re-checked against main before publication, including targeted regression tests for the affected security boundary.

Credits

Thanks @BG0ECV for reporting.

NVD の説明

OpenClaw before 2026.4.8 contains a request body replay vulnerability in fetchWithSsrFGuard that allows unsafe request bodies to be resent across cross-origin redirects. Attackers can exploit this by triggering redirects to exfiltrate sensitive request data or headers to unintended origins.

参考情報

openclaw/openclaw security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2026-40037 · ADVISORY
openclaw/openclaw commit d7c3210 · WEB
openclaw/openclaw · PACKAGE
vulncheck.com/advisories/openclaw-unsafe-request-body-replay-via-fetchwithssrfguard-cross-origin-redirects · WEB

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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

< 2026.4.8

2026.4.8