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CVE-2026-28449— OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression

Quick assessment

Affected
OpenClaw OpenClaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw 2026.2.25之前版本存在安全漏洞，该漏洞源于缺少对Nextcloud Talk webhook事件的持久重放状态保护，可能导致攻击者捕获并重放先前有效的已签名webhook请求，从而触发重复的入站消息处理，造成完整性或可用性问题。

CVSS 6.5 · Medium EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenClaw OpenClaw < 2026.2.25 affected
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I. Basic Information for CVE-2026-28449

Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.2.25 - Webhook Replay Attack via Missing Durable Replay Suppression
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw versions prior to 2026.2.25 lack durable replay state for Nextcloud Talk webhook events, allowing valid signed webhook requests to be replayed without suppression. Attackers can capture and replay previously valid signed webhook requests to trigger duplicate inbound message processing and cause integrity or availability issues.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
OpenClaw 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw 2026.2.25之前版本存在安全漏洞，该漏洞源于缺少对Nextcloud Talk webhook事件的持久重放状态保护，可能导致攻击者捕获并重放先前有效的已签名webhook请求，从而触发重复的入站消息处理，造成完整性或可用性问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenClaw OpenClaw 0 ~ 2026.2.25 -

II. Public POCs for CVE-2026-28449

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III. Intelligence Information for CVE-2026-28449

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Patches & Fixes for CVE-2026-28449 (1)

Vendor Advisories for CVE-2026-28449 (2)

Same Patch Batch · OpenClaw · 2026-03-19 · 60 CVEs total

CVE-2026-32038 9.8 CRITICAL OpenClaw - Sandbox Network Isolation Bypass via docker.network=container Parameter
CVE-2026-32013 8.8 HIGH OpenClaw < 2026.2.25 - Symlink Traversal in agents.files Methods
CVE-2026-31998 8.6 HIGH OpenClaw 2026.2.22 < 2026.2.24 - Authorization Bypass in Synology Chat Plugin via Empty al
CVE-2026-32034 8.1 HIGH OpenClaw < 2026.2.21 - Insecure Control UI Authentication over Plaintext HTTP
CVE-2026-32014 8.0 HIGH OpenClaw < 2026.2.26 - Node Reconnect Metadata Spoofing via Unsigned Platform Fields
CVE-2026-32032 7.8 HIGH OpenClaw < 2026.2.22 - Arbitrary Shell Execution via Unvalidated SHELL Environment Variabl
CVE-2026-32016 7.8 HIGH OpenClaw < 2026.2.22 - Path Traversal via Basename-Only Allowlist Matching on macOS
CVE-2026-32015 7.8 HIGH OpenClaw 2026.1.21 < 2026.2.19 - PATH Hijacking Bypass in tools.exec.safeBins Allowlist Va
CVE-2026-28461 7.5 HIGH OpenClaw < 2026.3.1 - Unbounded Memory Growth in Zalo Webhook via Query String Key Churn
CVE-2026-32030 7.5 HIGH OpenClaw < 2026.2.19 - Sensitive File Disclosure via stageSandboxMedia Path Traversal
CVE-2026-32025 7.5 HIGH OpenClaw < 2026.2.25 - Password Brute-Force via Browser-Origin WebSocket Authentication By
CVE-2026-32011 7.5 HIGH OpenClaw < 2026.3.2 - Slow-Request Denial of Service via Pre-Auth Webhook Body Parsing
CVE-2026-31989 7.4 HIGH OpenClaw < 2026.3.1 - Server-Side Request Forgery via web_search Citation Redirect
CVE-2026-32019 7.4 HIGH OpenClaw < 2026.2.22 - Incomplete IPv4 Special-Use Range Blocking in SSRF Guard
CVE-2026-27566 7.1 HIGH OpenClaw < 2026.2.22 - Allowlist Bypass via Wrapper Binary Unwrapping in system.run
CVE-2026-31992 7.1 HIGH OpenClaw < 2026.2.23 - Allowlist Exec-Guard Bypass via env -S
CVE-2026-28460 7.1 HIGH OpenClaw < 2026.2.22 - Allowlist Bypass via Shell Line-Continuation Command Substitution i
CVE-2026-32000 7.1 HIGH OpenClaw < 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Tool Execut
CVE-2026-32017 7.1 HIGH OpenClaw < 2026.2.19 - Arbitrary File Write via Short-Option Bypass in exec Allowlist
CVE-2026-32023 7.1 HIGH OpenClaw < 2026.2.24 - Approval Gating Bypass via Dispatch-Wrapper Depth-Cap Mismatch in s

Showing top 20 of 60 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: OpenClaw
Same vendor: OpenClaw
Same weakness: CWE-294

V. Comments for CVE-2026-28449

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