{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/codexbar/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.1,"id":"CVE-2026-49134"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["CodexBar"],"_cs_severities":["high"],"_cs_tags":["privilege-escalation","local-exploit","cve"],"_cs_type":"advisory","_cs_vendors":["CodexBar"],"content_html":"\u003cp\u003eCodexBar versions prior to 0.32.0 are vulnerable to a privilege escalation vulnerability (CVE-2026-49134) in the CLI installer. A race condition exists in the temporary file handling. This flaw allows a local attacker with same-user privileges to execute arbitrary commands as root. The vulnerability occurs because the installer uses \u003ccode\u003emktemp\u003c/code\u003e to create a temporary file, writes a privileged shell payload into it, and then executes the file with administrator privileges via bash. A local process can exploit this by rewriting the installer body before the administrator prompt is approved, leading to the execution of attacker-controlled commands with root privileges. This issue was reported on 2026-06-01 and affects versions prior to 0.32.0.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eA local attacker gains initial access to the system with limited privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker executes the vulnerable CodexBar CLI installer.\u003c/li\u003e\n\u003cli\u003eThe installer creates a temporary file using \u003ccode\u003emktemp\u003c/code\u003e to store a privileged shell payload.\u003c/li\u003e\n\u003cli\u003eThe installer writes the privileged shell payload to the temporary file.\u003c/li\u003e\n\u003cli\u003eA race condition occurs where the attacker, using a separate local process, attempts to rewrite the installer body.\u003c/li\u003e\n\u003cli\u003eThe attacker successfully overwrites the installer body with malicious code before the administrator prompt is approved.\u003c/li\u003e\n\u003cli\u003eThe installer executes the modified (attacker-controlled) code with administrator privileges via bash.\u003c/li\u003e\n\u003cli\u003eThe attacker gains root privileges and can execute arbitrary commands on the system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows a local attacker to escalate their privileges to root. This can lead to complete system compromise, including data theft, modification, and denial of service. The impact is severe, as it bypasses standard privilege separation mechanisms. The number of potential victims depends on the number of systems running vulnerable versions of CodexBar.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade CodexBar to version 0.32.0 or later to remediate CVE-2026-49134.\u003c/li\u003e\n\u003cli\u003eMonitor process creation events for execution of bash scripts from temporary directories, as demonstrated in the attack chain. Deploy the Sigma rule \u003ccode\u003eDetect Suspicious Bash Execution from Temp Directory\u003c/code\u003e to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eImplement file integrity monitoring to detect unauthorized modifications to the CodexBar installer binary, as described in the attack chain.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-06-01T21:19:09Z","date_published":"2026-06-01T21:19:09Z","id":"https://feed.craftedsignal.io/briefs/2026-06-codexbar-privesc/","summary":"CodexBar versions prior to 0.32.0 contain a privilege escalation vulnerability (CVE-2026-49134) due to a race condition in the CLI installer's temporary file handling, allowing local attackers to execute arbitrary commands as root.","title":"CodexBar Privilege Escalation Vulnerability (CVE-2026-49134)","url":"https://feed.craftedsignal.io/briefs/2026-06-codexbar-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — CodexBar","version":"https://jsonfeed.org/version/1.1"}