ztunnel-1.27 — security advisory

{
  "id": "2d98b071884422d8449f0a76c73f3d4f5ec7f5f284c8b6548706ea9ae94f19f0",
  "url": "https://osv.dev/vulnerability/CGA-5843-4987-4j2h",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CGA-5843-4987-4j2h",
    "summary": "CGA-5843-4987-4j2h",
    "evidence": "osv:CGA-5843-4987-4j2h",
    "products": [
      {
        "name": {
          "value": "ztunnel-1.27",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CGA-5843-4987-4j2h",
      "aliases": [
        "CGA-5843-4987-4j2h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "ztunnel-1.27",
            "purl": "pkg:apk/chainguard/ztunnel-1.27?arch=x86_64",
            "ecosystem": "Chainguard"
          },
          "database_specific": {
            "source": "https://advisories.cgr.dev/chainguard/v3/osv/CGA-5843-4987-4j2h.json"
          },
          "ecosystem_specific": {
            "components": [
              {
                "component_name": "rustls",
                "component_purl": "pkg:cargo/rustls@0.23.26",
                "component_type": "rust-crate",
                "component_version": "0.23.26",
                "component_location": "/usr/bin/ztunnel",
                "latest_event_status": "fix_not_planned",
                "latest_event_timestamp": "2026-10-07T01:48:15Z"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-07T17:25:41.565348426Z",
      "provider": "osv",
      "upstream": [
        "GHSA-2mjx-qc3c-rqvc"
      ],
      "references": [
        "https://github.com/rustls/rustls/security/advisories/GHSA-2mjx-qc3c-rqvc",
        "https://github.com/golang/go/commit/5046bdf8a612b35a2c1a9e168054c1d5c65e7dd7",
        "https://github.com/rustls/rustls/commit/98456aea708a7e3c6151e00ca2d4428e7a58257a",
        "https://github.com/rustls/rustls",
        "https://rustsec.org/advisories/RUSTSEC-2026-0285.html"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 96478,
  "published_at": "2026-10-06T13:54:47+00:00"
}