github.com/sigstore/cosign/v2 — security advisory

{
  "id": "fecc86e9e3eab0ea72eaa04ca23fc639a1ae70afb0c2c9fac6785fef6e590015",
  "url": "https://osv.dev/vulnerability/ECHO-da76-7fca-1d02",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ECHO-da76-7fca-1d02",
    "summary": "ECHO-da76-7fca-1d02",
    "evidence": "osv:ECHO-da76-7fca-1d02",
    "products": [
      {
        "name": {
          "value": "github.com/sigstore/cosign/v2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "ECHO-da76-7fca-1d02",
      "aliases": [
        "ECHO-da76-7fca-1d02"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.3"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/sigstore/cosign/v2",
            "purl": "pkg:golang/github.com/sigstore/cosign/v2",
            "ecosystem": "Echo:Go"
          },
          "database_specific": {
            "source": "https://advisory.echohq.com/osv/ECHO-da76-7fca-1d02.json"
          }
        }
      ],
      "modified": "2026-10-08T12:45:03.510420873Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-39395",
        "GHSA-w6c6-c85g-mmv6"
      ],
      "references": [
        "https://advisory.echohq.com/cve/CVE-2026-39395",
        "https://github.com/sigstore/cosign/security/advisories/GHSA-w6c6-c85g-mmv6"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-39395",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 99151,
  "published_at": "2026-09-28T00:01:31.115+00:00"
}