PT-2026-45557 · Steipete+1 · Codexbar

CVE-2026-49134 · Published 2026-06-01 · Updated 2026-07-22

Positive Technologies (AI Summary)

CVSS v4.0

7.5

High

Base vector

AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions CodexBar versions prior to 0.32.0

Description A privilege escalation issue exists in the CLI installer. Local attackers can execute arbitrary commands as root by exploiting a race condition—a situation where the system's behavior depends on the sequence or timing of uncontrollable events—during temporary file handling. The installer uses mktemp to create a temporary file, writes a privileged shell payload into it, and executes it via bash with administrator privileges. A local process running under the same user can rewrite the installer body before the administrator prompt is approved, leading to the execution of attacker-controlled commands with root privileges.

Recommendations Update CodexBar to version 0.32.0 or later.

Exploit

Fix

LPE

Weakness Enumeration

CWE-377

Related Identifiers

CVE-2026-49134

Affected Products

Codexbar

References · 9

• 🔥 https://github.com/steipete/CodexBar/pull/1222 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49134.json · Exploit
• https://github.com/steipete/CodexBar/commit/dbc944d46cd4cf7877d1ca47c44556fe573b46e8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-49134 · Security Note
• https://osv.dev/vulnerability/CVE-2026-49134 · Vendor Advisory
• https://github.com/steipete/CodexBar · Note
• https://github.com/steipete/CodexBar/releases/tag/v0.32.0 · Note
• https://vulncheck.com/advisories/codexbar-privilege-escalation-via-cli-installer-temp-file · Note
• https://t.me/cveNotify/211645 · Telegram Post