CVE-2026-82393

{
  "id": "CVE-2026-82393",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-31T22:17:22.353",
  "lastModified": "2026-11-03T23:17:57.270",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "pnpm",
          "product": "pnpm",
          "versions": [
            {
              "version": "< 10.34.5",
              "status": "affected"
            },
            {
              "version": ">= 11.0.0, < 11.11.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-09-02T03:55:40.199814Z",
          "id": "CVE-2026-82393",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-73"
        },
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/pnpm/pnpm/commit/51300fd41c5e4c8f47635108e373cc3d1f324fa7",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/pull/12872",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/pull/12890",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/releases/tag/v10.34.5",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/releases/tag/v11.11.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}