Vulnerabilities in pkg:golang/go.woodpecker-ci.org/woodpecker/v2

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qf34-295c-26v8",
  "modified" : "2026-07-14T20:29:32Z",
  "published" : "2026-07-14T20:29:32Z",
  "aliases" : [ "CVE-2026-61549" ],
  "summary" : "Woodpecker: Privilege escalation via unrestricted serviceAccountName in the Kubernetes backend",
  "details" : "### Impact\n\nA privilege escalation vulnerability affects Woodpecker instances using the **Kubernetes backend**.\n\nThe pipeline option `backend_options.kubernetes.serviceAccountName` was passed directly to the pod spec without any admin gating.\n\n**Who is impacted:** any operator running the Kubernetes backend. Any user with **Push** permission on a connected repository can run pipeline pods under an arbitrary ServiceAccount in the pipeline namespace, gaining that account's RBAC permissions. If a privileged ServiceAccount is reachable in that namespace, this can lead to secret exfiltration (database credentials, API keys, TLS certs) and full cluster takeover.\n\n### Patches\n\nhttps://github.com/woodpecker-ci/woodpecker/pull/6792\n\n### Workarounds\n\nOperators who cannot upgrade immediately can mitigate by any of:\n\n- **Restrict Push access** on repositories connected to the Kubernetes-backed instance to\n  trusted users only.\n- **Harden the pipeline namespace**: ensure no privileged ServiceAccount exists or is bound in\n  the namespace where pipeline pods run; keep the `default` ServiceAccount minimally privileged.\n- **Disable ServiceAccount token automounting** for ServiceAccounts that should not be used by\n  pipelines.\n- **Enforce an admission policy** (e.g. OPA/Gatekeeper, Kyverno, or a ValidatingAdmissionPolicy)\n  that rejects pipeline pods setting an unexpected `serviceAccountName`.\n- **Use a dedicated, isolated namespace** per org/instance with no sensitive RBAC bindings.\n\n### Resources\n\n- Vulnerable option introduced in commit `609ba481b5e912f59aaae8ca7bc22b44523c5e37`\n- Affected versions: `v1.0.0` through `v3.15.0`\n- Source: `pipeline/backend/kubernetes/backend_options.go` (field `ServiceAccountName`),\n  `pipeline/backend/kubernetes/pod.go` (assigned to pod spec with no gating)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "go.woodpecker-ci.org/woodpecker/v3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.16.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/woodpecker-ci/woodpecker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0"
      }, {
        "last_affected" : "1.0.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "go.woodpecker-ci.org/woodpecker/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.8.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-qf34-295c-26v8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/woodpecker-ci/woodpecker/pull/6792"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/woodpecker-ci/woodpecker"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-269", "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-14T20:29:32Z",
    "nvd_published_at" : null
  }
}