Cyber Posture

CVE-2026-43532

HighPublic PoC

Published: 05 May 2026

Published
05 May 2026
Modified
05 May 2026
KEV Added
—
Patch
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CVSS Score 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS Score 0.0004 11.0th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Description

OpenClaw versions 2026.4.7 before 2026.4.10 fail to normalize Discord event cover image parameters in sandbox media processing. Attackers can bypass media normalization to inject host-local media references into channel action paths expecting normalized media.

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-8 Spam Protection
addresses: CWE-184

Spam filters rely on evolving blacklists, signatures, and heuristics of disallowed message patterns; keeping them updated per the control directly mitigates incomplete disallowed-input lists.

Security SummaryAI

CVE-2026-43532 is a vulnerability in OpenClaw versions 2026.4.7 before 2026.4.10, affecting the sandbox media processing component. It stems from a failure to normalize Discord event cover image parameters, enabling attackers to bypass media normalization and inject host-local media references into channel action paths that expect normalized media. The issue carries a CVSS v3.1 base score of 7.7 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) and is classified under CWE-184.

Attackers with low privileges (PR:L) can exploit this over the network (AV:N) with low attack complexity and no user interaction required. Successful exploitation allows injection of host-local media references, resulting in high confidentiality impact (C:H) by potentially exposing sensitive local media through manipulated channel action paths.

Advisories recommend upgrading to OpenClaw version 2026.4.10, where the fix is implemented via commit 979c6f09d6fad96596feb91c905934be7e0b4f15. Additional details are provided in the GitHub security advisory at https://github.com/openclaw/openclaw/security/advisories/GHSA-c9h3-5p7r-mrjh and the VulnCheck advisory at https://www.vulncheck.com/advisories/openclaw-sandbox-media-normalization-bypass-via-discord-event-cover-image.

Details

CWE(s)
CWE-184

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
Why these techniques?

Network-accessible sandbox bypass in media normalization enables remote exploitation of the application (T1190) to directly access and expose host-local files/media (T1005).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

References