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CVE-2026-49134

Estado: AplazadaAlta (7.5)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CVE requiere interacción del usuario (UI:P) para ejecutar el instalador, lo que activa T1203. La carrera en mktemp permite reescribir la carga antes de la ejecución con privilegios root (T1068). Los comandos arbitrarios se ejecutan vía bash (T1059).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareThreat Intelligence ProgramRestrict Web-Based Content

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Codexbar — CodexbarAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-49134",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49134",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
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          "version": "2.0.3",
          "timestamp": "2026-06-02T12:38:47.403866Z"
        }
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    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
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      }
    ],
    "cvssMetricV40": [
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        "type": "Secondary",
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          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "exploitMaturity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
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      "affectedData": [
        {
          "repo": "https://github.com/steipete/CodexBar",
          "vendor": "steipete",
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          "versions": [
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              "version": "0",
              "lessThan": "0.32.0",
              "versionType": "semver"
            }
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  "published": "2026-06-01T21:16:46.353",
  "references": [
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      "url": "https://github.com/steipete/CodexBar/commit/dbc944d46cd4cf7877d1ca47c44556fe573b46e8",
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      "url": "https://github.com/steipete/CodexBar/pull/1222",
      "source": "disclosure@vulncheck.com"
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    {
      "url": "https://github.com/steipete/CodexBar/releases/tag/v0.32.0",
      "source": "disclosure@vulncheck.com"
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          "value": "CWE-377"
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  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "CodexBar anterior a la versión 0.32.0 contiene una vulnerabilidad de escalada de privilegios en el instalador de CLI que permite a atacantes locales ejecutar comandos arbitrarios como root explotando una condición de carrera en el manejo de archivos temporales. El instalador crea un archivo temporal con mktemp, escribe una carga útil de shell privilegiada en él y lo ejecuta con privilegios de administrador a través de bash, permitiendo que un proceso local del mismo usuario reescriba el cuerpo del instalador antes de que se apruebe la solicitud del administrador, lo que provoca que los comandos controlados por el atacante se ejecuten como root."
    }
  ],
  "lastModified": "2026-07-22T08:10:00.117",
  "sourceIdentifier": "disclosure@vulncheck.com"
}