CVE-2026-49134 json
CodexBar < 0.32.0 Privilege Escalation via CLI Installer Temp File
published 2026-06-01 5 mo ago modified 2026-11-08 24 h ago also EUVD-2026-33750
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- steipete CodexBar 0.32.0
- github.com/steipete/CodexBar@dbc944d commit
- github.com/steipete/CodexBar#1222 pull request
- github.com/steipete/CodexBar/releases/tag/v0.32.0 release
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/steipete/CodexBar/pull/1222 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.5 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 7.5 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- steipete CodexBar
Classification
- Weakness
-
- CWE-377 DEPRECATED: Insecure Temporary File
References
-
github.com
/steipete/CodexBar/pull/1222
issue-tracking, patch, exploit
-
github.com
/steipete/CodexBar/commit/dbc944d46cd4cf7877d1ca47c44556fe573b46e8
patch
-
github.com
/steipete/CodexBar/releases/tag/v0.32.0
release-notes
-
vulncheck.com
/advisories/codexbar-privilege-escalation-via-cli-installer-temp-file
third-party-advisory
Sources
- CVE List CVE-2026-49134
- NVD CVE-2026-49134
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.