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CVE-2026-49134— CodexBar < 0.32.0 Privilege Escalation via CLI Installer Temp File

Quick assessment

Affected
steipete CodexBar
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CodexBar是Peter Steinberger个人开发者的一款AI编程服务用量监控工具。 CodexBar 0.32.0之前版本存在安全漏洞，该漏洞源于CLI安装程序中临时文件处理的竞争条件，可能导致本地攻击者以root权限执行任意命令。

CVSS 7.1 · High EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
steipete CodexBar < 0.32.0 affected
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I. Basic Information for CVE-2026-49134

Vulnerability Information
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Vulnerability Title
CodexBar < 0.32.0 Privilege Escalation via CLI Installer Temp File
Source: CVE Program / CVE List V5
Vulnerability Description
CodexBar prior to 0.32.0 contains a privilege escalation vulnerability in the CLI installer that allows local attackers to execute arbitrary commands as root by exploiting a race condition in temporary file handling. The installer creates a temporary file with mktemp, writes a privileged shell payload into it, and executes it with administrator privileges via bash, allowing a same-user local process to rewrite the installer body before the administrator prompt is approved, causing attacker-controlled commands to run as root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的临时文件
Source: CVE Program / CVE List V5
Vulnerability Title
CodexBar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CodexBar是Peter Steinberger个人开发者的一款AI编程服务用量监控工具。 CodexBar 0.32.0之前版本存在安全漏洞，该漏洞源于CLI安装程序中临时文件处理的竞争条件，可能导致本地攻击者以root权限执行任意命令。
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
steipete CodexBar 0 ~ 0.32.0 -

II. Public POCs for CVE-2026-49134

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11445 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-49134

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Patches & Fixes for CVE-2026-49134 (2)

Vendor Advisories for CVE-2026-49134 (1)

Other References for CVE-2026-49134 (1)

Same Patch Batch · steipete · 2026-06-01 · 3 CVEs total

CVE-2026-49135 7.1 HIGH CodexBar < 0.32.0 Insecure Temporary File Handling in Notarization Workflow
CVE-2026-43625 5.9 MEDIUM CodexBar < 0.32.0 Session Cookie Exposure via HTTP Redirect

IV. Related Vulnerabilities

Same product: CodexBar
Same vendor: steipete
Same weakness: CWE-377

V. Comments for CVE-2026-49134

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