Capgo CLI - Arbitrary File Overwrite via Symlink-Following in Local Credential Operations

{
  "id": "23f891301c3e51e5492d353313119a93bf107eae306ed5aad4b3c1c045ddafc8",
  "url": "https://osv.dev/vulnerability/CVE-2026-56236",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Capgo CLI - Arbitrary File Overwrite via Symlink-Following in Local Credential Operations",
    "summary": "Capgo CLI before 12.128.2 contains arbitrary file overwrite vulnerabilities in login and build credentials operations that follow symlinks without validation. Attackers can create malicious symlinks in repositories to overwrite arbitrary files or expose credentials with world-readable permissions when developers run the CLI.",
    "evidence": "osv:CVE-2026-56236",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-56236",
      "aliases": [
        "CVE-2026-56236",
        "GHSA-8mpm-q7mh-8fvh"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/Cap-go/capgo.app",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "12.128.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "12.128.2"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
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            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56236.json"
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      ],
      "modified": "2026-10-28T02:30:41.292121584Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56236.json",
        "https://github.com/Cap-go/capgo/security/advisories/GHSA-8mpm-q7mh-8fvh",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56236",
        "https://www.vulncheck.com/advisories/capgo-cli-arbitrary-file-overwrite-via-symlink-following-in-local-credential-operations"
      ],
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56236.json"
      }
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        "value": "CVE-2026-56236",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509144,
  "published_at": "2026-06-21T13:26:51.45+00:00"
}