ETK-2026-1344Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-1344",
  "cve_id": null,
  "display_id": "ETK-2026-1344",
  "ghsa_id": "GHSA-fpmh-frq8-7rj8",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Malformed-input panic in klauspost/compress zstd decoder",
  "summary": "klauspost/compress/zstd before v1.20.2 can panic while decoding specially malformed zstd frames. An attacker can cause a process crash when the application passes untrusted zstd-compressed input to the decoder.",
  "mitigation": "Upgrade github.com/klauspost/compress/zstd to v1.20.2 or later. Until upgrading, avoid decoding zstd data from untrusted sources or isolate decoding failures from critical processes.",
  "vendor": "go",
  "product": "go:klauspost/compress/zstd",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= v1.20.1"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v1.20.2"
      ],
      "package_name": "klauspost/compress/zstd",
      "purl": "pkg:golang/klauspost/compress/zstd"
    }
  ],
  "cwes": null,
  "cvss_score": 7,
  "cvss_src": "ethiack_provisional",
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 15.965659566666666,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-10-12T10:23:05+00:00",
      "days": -8.808698679502315,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:36.610906+00:00",
      "url": "https://github.com/klauspost/compress/security/advisories/GHSA-fpmh-frq8-7rj8"
    },
    "trigger_signal": {
      "at": "2026-10-12T10:23:05+00:00",
      "days": -8.808698679502315,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:36.610906+00:00",
      "url": "https://github.com/klauspost/compress/security/advisories/GHSA-fpmh-frq8-7rj8"
    }
  }
}