{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-43534/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":9.1,"id":"CVE-2026-43534"}],"_cs_exploited":false,"_cs_products":["OpenClaw"],"_cs_severities":["high"],"_cs_tags":["input-validation","privilege-escalation","cve-2026-43534"],"_cs_type":"advisory","_cs_vendors":["OpenClaw"],"content_html":"\u003cp\u003eOpenClaw versions prior to 2026.4.10 are susceptible to an input validation vulnerability that allows attackers to escalate privileges. By supplying malicious hook names, an attacker can manipulate the system to enqueue external hook metadata as trusted system events. This allows the attacker to escalate untrusted input into a higher-trust agent context. This vulnerability, identified as CVE-2026-43534, poses a significant risk to systems using vulnerable versions of OpenClaw by allowing unauthenticated attackers to potentially gain unauthorized access and control.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies an OpenClaw instance running a version prior to 2026.4.10.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious hook name designed to exploit the input validation vulnerability.\u003c/li\u003e\n\u003cli\u003eThe attacker injects the malicious hook name into a system event that is processed by OpenClaw.\u003c/li\u003e\n\u003cli\u003eDue to the lack of input validation, OpenClaw enqueues the external hook metadata as a trusted system event.\u003c/li\u003e\n\u003cli\u003eThe system processes the malicious hook, granting the attacker escalated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the escalated privileges to execute arbitrary commands on the system.\u003c/li\u003e\n\u003cli\u003eThe attacker establishes persistence on the compromised system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-43534 allows an unauthenticated attacker to escalate privileges within the OpenClaw agent. This could lead to unauthorized access to sensitive data, modification of system configurations, or execution of arbitrary code on the affected system. The vulnerability has a CVSS v3.1 score of 9.1, indicating a critical risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade OpenClaw to version 2026.4.10 or later to patch CVE-2026-43534.\u003c/li\u003e\n\u003cli\u003eImplement input validation on all external hook metadata to prevent malicious hook names from being enqueued as trusted system events.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided in this brief to detect potential exploitation attempts within your environment.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-05T12:16:19Z","date_published":"2026-05-05T12:16:19Z","id":"/briefs/2026-05-openclaw-hook-escalation/","summary":"OpenClaw before version 2026.4.10 contains an input validation vulnerability (CVE-2026-43534) allowing external hook metadata to be enqueued as trusted system events, enabling attackers to escalate privileges.","title":"OpenClaw Input Validation Vulnerability Allows Privilege Escalation","url":"https://feed.craftedsignal.io/briefs/2026-05-openclaw-hook-escalation/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-43534","version":"https://jsonfeed.org/version/1.1"}