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CVE-2026-28461— OpenClaw < 2026.3.1 - Unbounded Memory Growth in Zalo Webhook via Query String Key Churn

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 2026.3.1之前版本存在安全漏洞，该漏洞源于Zalo webhook端点存在无限制内存增长问题，可能导致未经验证的攻击者通过变化查询字符串触发内存密钥累积，从而造成内存压力、进程不稳定或内存不足状况，降低服务可用性。

CVSS 7.5 · High EPSS 0.61% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenClaw OpenClaw < 2026.3.1 affected
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I. Basic Information for CVE-2026-28461

Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.3.1 - Unbounded Memory Growth in Zalo Webhook via Query String Key Churn
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw versions prior to 2026.3.1 contain an unbounded memory growth vulnerability in the Zalo webhook endpoint that allows unauthenticated attackers to trigger in-memory key accumulation by varying query strings. Remote attackers can exploit this by sending repeated requests with different query parameters to cause memory pressure, process instability, or out-of-memory conditions that degrade service availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
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 2026.3.1之前版本存在安全漏洞，该漏洞源于Zalo webhook端点存在无限制内存增长问题，可能导致未经验证的攻击者通过变化查询字符串触发内存密钥累积，从而造成内存压力、进程不稳定或内存不足状况，降低服务可用性。
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 ~ 2026.3.1 -

II. Public POCs for CVE-2026-28461

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III. Intelligence Information for CVE-2026-28461

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Vendor Advisories for CVE-2026-28461 (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-2026-32016 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-2026-32032 7.8 HIGH OpenClaw < 2026.2.22 - Arbitrary Shell Execution via Unvalidated SHELL Environment Variabl
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-2026-32030 7.5 HIGH OpenClaw < 2026.2.19 - Sensitive File Disclosure via stageSandboxMedia Path Traversal
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-2026-32017 7.1 HIGH OpenClaw < 2026.2.19 - Arbitrary File Write via Short-Option Bypass in exec Allowlist
CVE-2026-27566 7.1 HIGH OpenClaw < 2026.2.22 - Allowlist Bypass via Wrapper Binary Unwrapping in system.run
CVE-2026-32023 7.1 HIGH OpenClaw < 2026.2.24 - Approval Gating Bypass via Dispatch-Wrapper Depth-Cap Mismatch in s
CVE-2026-32000 7.1 HIGH OpenClaw < 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Tool Execut
CVE-2026-31994 7.1 HIGH OpenClaw < 2026.2.19 - Local Command Injection via Unsafe cmd Argument Handling in Windows
CVE-2026-28460 7.1 HIGH OpenClaw < 2026.2.22 - Allowlist Bypass via Shell Line-Continuation Command Substitution i
CVE-2026-31992 7.1 HIGH OpenClaw < 2026.2.23 - Allowlist Exec-Guard Bypass via env -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-770

V. Comments for CVE-2026-28461

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