OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation

CAO 7.5CVE-2026-35640 · GHSA-3h52-cx59-c456 · Công bố 09/04/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-35640 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng openclaw (openclaw), openclaw.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.44%, cao hơn 38.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 2026.3.25, 2026.3.28 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
openclaw openclaw	`< 2026.3.25`	`2026.3.25`
openclaw npm	`< 2026.3.28`	`2026.3.28`

Mô tả

Summary

Feishu webhook reads and parses unauthenticated request bodies before signature validation

Affected Packages / Versions

Package: openclaw
Affected versions: <= 2026.3.24
First patched version: 2026.3.25
Latest published npm version at verification time: 2026.3.24

Details

Feishu webhook handling previously parsed JSON before signature validation, which let unauthenticated callers force full JSON parsing work before rejection. Commit 5e8cb22176e9235e224be0bc530699261eb60e53 reads the raw request body, validates the signature first, and only then parses JSON.

Verified vulnerable on tag v2026.3.24 and fixed on main by commit 5e8cb22176e9235e224be0bc530699261eb60e53.

Fix Commit(s)

5e8cb22176e9235e224be0bc530699261eb60e53

Mô tả của NVD

OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.