{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/sandbox-bypass/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-33392"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["cve-2026-33392","rce","jetbrains","youtrack","sandbox-bypass"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-33392 describes a remote code execution (RCE) vulnerability affecting JetBrains YouTrack servers before version 2025.3.131383. This vulnerability allows a high privileged user to bypass the application\u0026rsquo;s sandbox and execute arbitrary code on the underlying system. While the specific exploitation details are not provided in the source, successful exploitation would grant the attacker complete control over the YouTrack server and potentially the entire network. Given the potential for complete system compromise, organizations using affected versions of YouTrack should prioritize patching this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker authenticates to the YouTrack server with a high-privileged account.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious payload designed to exploit the sandbox bypass. This payload leverages the improper neutralization of special elements used in a template engine (CWE-1336).\u003c/li\u003e\n\u003cli\u003eThe attacker injects the malicious payload into a vulnerable field or function within YouTrack, such as a custom workflow or template.\u003c/li\u003e\n\u003cli\u003eThe YouTrack server processes the malicious payload, failing to properly sanitize the input.\u003c/li\u003e\n\u003cli\u003eThe injected payload bypasses the intended security sandbox restrictions.\u003c/li\u003e\n\u003cli\u003eArbitrary code is executed on the YouTrack server, outside the intended sandbox environment.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the gained code execution to install a webshell or other persistent access mechanisms.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the compromised YouTrack server as a pivot point to access other systems within the network, potentially leading to data exfiltration or further malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-33392 allows a high privileged user to execute arbitrary code on the YouTrack server. This can lead to complete system compromise, including data theft, modification, or destruction. The impact is especially significant for organizations that rely on YouTrack for critical project management and issue tracking, as a compromised server can disrupt operations, expose sensitive information, and damage reputation.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately upgrade JetBrains YouTrack to version 2025.3.131383 or later to patch CVE-2026-33392.\u003c/li\u003e\n\u003cli\u003eImplement the provided Sigma rule to detect potential exploitation attempts against YouTrack servers.\u003c/li\u003e\n\u003cli\u003eReview and restrict high-privilege user access within YouTrack to minimize the potential attack surface.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity, particularly requests containing unusual characters or patterns indicative of code injection attempts, to assist with detection of similar exploits.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-17T08:16:17Z","date_published":"2026-04-17T08:16:17Z","id":"/briefs/2026-04-jetbrains-rce/","summary":"A high privileged user can achieve remote code execution via sandbox bypass in JetBrains YouTrack before version 2025.3.131383, identified as CVE-2026-33392, potentially leading to complete system compromise.","title":"JetBrains YouTrack RCE via Sandbox Bypass (CVE-2026-33392)","url":"https://feed.craftedsignal.io/briefs/2026-04-jetbrains-rce/"},{"_cs_actors":[],"_cs_cves":[{"cvss":8.2,"id":"CVE-2026-34982"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["vim","modeline","sandbox-bypass","code-execution","cve-2026-34982"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eVim, a widely used open-source command-line text editor, is susceptible to a critical vulnerability (CVE-2026-34982) affecting versions prior to 9.2.0276. This flaw allows a malicious actor to execute arbitrary operating system commands by crafting a specific file that exploits a bypass in the modeline sandbox. The vulnerability arises from the \u003ccode\u003ecomplete\u003c/code\u003e, \u003ccode\u003eguitabtooltip\u003c/code\u003e, and \u003ccode\u003eprintheader\u003c/code\u003e options lacking the \u003ccode\u003eP_MLE\u003c/code\u003e flag, and the \u003ccode\u003emapset()\u003c/code\u003e function not having a \u003ccode\u003echeck_secure()\u003c/code\u003e call, which permits exploitation from sandboxed expressions. Successful exploitation requires a user to open a specially crafted file. This poses a significant risk, as attackers could leverage this vulnerability to gain unauthorized access to systems, escalate privileges, or perform other malicious activities. The vulnerability was patched in commit 9.2.0276.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious file containing a modeline with embedded OS commands.\u003c/li\u003e\n\u003cli\u003eThe crafted file is distributed to the target via social engineering or other means.\u003c/li\u003e\n\u003cli\u003eVictim opens the malicious file using a vulnerable version of Vim (prior to 9.2.0276).\u003c/li\u003e\n\u003cli\u003eVim parses the modeline in the file.\u003c/li\u003e\n\u003cli\u003eDue to the missing \u003ccode\u003eP_MLE\u003c/code\u003e flag in \u003ccode\u003ecomplete\u003c/code\u003e, \u003ccode\u003eguitabtooltip\u003c/code\u003e, or \u003ccode\u003eprintheader\u003c/code\u003e options, the modeline is executed without proper sandboxing.\u003c/li\u003e\n\u003cli\u003eAlternatively, the \u003ccode\u003emapset()\u003c/code\u003e function, lacking a \u003ccode\u003echeck_secure()\u003c/code\u003e call, is abused from the sandboxed expression in the modeline.\u003c/li\u003e\n\u003cli\u003eArbitrary OS commands embedded in the modeline are executed with the privileges of the user running Vim.\u003c/li\u003e\n\u003cli\u003eAttacker achieves code execution, potentially leading to system compromise, data exfiltration, or further malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-34982 can lead to arbitrary code execution on the affected system. The severity is compounded by the widespread use of Vim in various environments, including development, system administration, and general text editing. The impact could range from data breaches and malware installation to complete system compromise, depending on the commands executed and the privileges of the user opening the malicious file. While the exact number of potential victims is unknown, the ubiquity of Vim makes this vulnerability a significant concern for any organization using unpatched versions.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Vim to version 9.2.0276 or later to patch CVE-2026-34982.\u003c/li\u003e\n\u003cli\u003eImplement the provided Sigma rule to detect the execution of potentially malicious Vim commands based on process execution patterns.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for suspicious outbound connections originating from Vim processes after the execution of potentially malicious files, using network connection logs.\u003c/li\u003e\n\u003cli\u003eUse endpoint detection and response (EDR) solutions to identify and block suspicious processes spawned by Vim, leveraging process creation logs.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T16:16:38Z","date_published":"2026-04-06T16:16:38Z","id":"/briefs/2026-04-vim-modeline-bypass/","summary":"A critical vulnerability in Vim versions prior to 9.2.0276 allows arbitrary OS command execution via a crafted file that bypasses the modeline sandbox due to missing security checks, potentially leading to code execution.","title":"Vim Modeline Sandbox Bypass Vulnerability (CVE-2026-34982)","url":"https://feed.craftedsignal.io/briefs/2026-04-vim-modeline-bypass/"},{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["sandbox-bypass","dependency-vulnerability","npm"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eThe \u003ccode\u003eopenclaw\u003c/code\u003e npm package, a tool used for [describe package functionality if known, else leave generic], contains a critical vulnerability related to how heartbeat contexts are inherited. Specifically, improper handling of the \u003ccode\u003esenderIsOwner\u003c/code\u003e property during context inheritance allows a malicious actor to bypass intended sandbox restrictions. This vulnerability affects \u003ccode\u003eopenclaw\u003c/code\u003e versions up to and including 2026.3.28. This issue was reported by @AntAISecurityLab and patched in version 2026.3.31, released on March 31, 2026. Defenders need to ensure that their \u003ccode\u003eopenclaw\u003c/code\u003e dependencies are updated to the patched version or later to mitigate this risk.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious package that includes the vulnerable \u003ccode\u003eopenclaw\u003c/code\u003e version (\u0026lt;=2026.3.28) as a dependency.\u003c/li\u003e\n\u003cli\u003eThe malicious package leverages the heartbeat functionality of \u003ccode\u003eopenclaw\u003c/code\u003e to establish an initial context.\u003c/li\u003e\n\u003cli\u003eThe attacker manipulates the heartbeat context inheritance mechanism to gain control of the \u003ccode\u003esenderIsOwner\u003c/code\u003e property.\u003c/li\u003e\n\u003cli\u003eBy exploiting the inheritance flaw, the attacker escalates privileges within the \u003ccode\u003eopenclaw\u003c/code\u003e sandbox environment.\u003c/li\u003e\n\u003cli\u003eThe attacker utilizes the escalated privileges to execute arbitrary code within the sandbox.\u003c/li\u003e\n\u003cli\u003eThe arbitrary code gains access to sensitive resources or data within the application utilizing the \u003ccode\u003eopenclaw\u003c/code\u003e package.\u003c/li\u003e\n\u003cli\u003eThe attacker exfiltrates the compromised data or uses the compromised application as a pivot point for further attacks.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows attackers to bypass the \u003ccode\u003eopenclaw\u003c/code\u003e sandbox, potentially leading to arbitrary code execution within applications using the vulnerable package. While the exact scope of impact depends on the application using \u003ccode\u003eopenclaw\u003c/code\u003e, the critical severity suggests significant potential for data breaches, service disruption, or further lateral movement within the compromised environment. Given the widespread use of npm packages, a successful exploit could affect a large number of applications and users.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade the \u003ccode\u003eopenclaw\u003c/code\u003e npm package to version 2026.3.31 or later. This version contains the fix for the identified vulnerability.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided below to detect potential exploitation attempts in your environment. Focus on monitoring process creation and file events related to \u003ccode\u003eopenclaw\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eImplement software composition analysis (SCA) tools to automatically detect vulnerable dependencies like \u003ccode\u003eopenclaw\u003c/code\u003e in your projects.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-02T20:59:29Z","date_published":"2026-04-02T20:59:29Z","id":"/briefs/2026-04-openclaw-sandbox-bypass/","summary":"A critical vulnerability in the openclaw npm package (\u003c=2026.3.28) allows a heartbeat context inheritance to bypass the sandbox via senderIsOwner escalation, patched in version 2026.3.31.","title":"OpenClaw Sandbox Bypass via Heartbeat Context Inheritance","url":"https://feed.craftedsignal.io/briefs/2026-04-openclaw-sandbox-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed — Sandbox-Bypass","version":"https://jsonfeed.org/version/1.1"}