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CVE-2026-55698

Estado: AnalizadaAlta (8.8)—

pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can persist package-manager bootstrap metadata in the first YAML document of pnpm-lock.yaml. Before the patch, direct pnpm execution trusted an already resolved packageManagerDependencies entry when the committed env lockfile contained matching pnpm and @pnpm/exe versions. A malicious repository could therefore commit package-manager lockfile package records and snapshots that bypassed fresh package-manager resolution, then cause pnpm to install and execute bytes selected by that committed lockfile state during automatic version switching. This vulnerability is fixed in 10.34.2 and 11.5.3.

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.

Requiere interacción del usuario (UI:R) para clonar/usar repo malicioso. Cadena de suministro: lockfile comprometido instala código malicioso via versiones falsificadas de pnpm. Ejecuta bytes seleccionados por atacante.

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

Update SoftwareVulnerability ScanningRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution Prevention

Tecnologías afectadas (1)

Pnpm — Pnpm

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-55698",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
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            },
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            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-25T00:00:00+00:00"
        }
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          "userInteraction": "REQUIRED",
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          "confidentialityImpact": "HIGH"
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      }
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          "versions": [
            {
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              "version": "< 10.34.2"
            },
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            }
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  "published": "2026-06-25T18:16:40.837",
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    },
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        },
        {
          "lang": "en",
          "value": "CWE-494"
        },
        {
          "lang": "en",
          "value": "CWE-829"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can persist package-manager bootstrap metadata in the first YAML document of pnpm-lock.yaml. Before the patch, direct pnpm execution trusted an already resolved packageManagerDependencies entry when the committed env lockfile contained matching pnpm and @pnpm/exe versions. A malicious repository could therefore commit package-manager lockfile package records and snapshots that bypassed fresh package-manager resolution, then cause pnpm to install and execute bytes selected by that committed lockfile state during automatic version switching. This vulnerability is fixed in 10.34.2 and 11.5.3."
    }
  ],
  "lastModified": "2026-06-30T19:03:56.020",
  "configurations": [
    {
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          "operator": "OR"
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}