{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.7.0"
              },
              {
                "fixed": "1.7.8"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "c3036e21abca984952947360e47f1f36c2ef1b22"
            },
            {
              "fixed": "54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30"
            },
            {
              "fixed": "56d0d6915f7f25941dc5b4f484028646f6601a37"
            }
          ],
          "repo": "https://github.com/crowdsecurity/crowdsec",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-273h-gvwr-c3qj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44981.json"
  },
  "details": "CrowdSec offers crowdsourced protection against malicious IPs. From 1.7.0 until 1.7.8, the LAPI router used gin-contrib/gzip with DefaultDecompressHandle globally in pkg/apiserver/controllers/controller.go, causing /v1/watchers and /v1/watchers/login to decompress unauthenticated gzip-compressed JSON request bodies without enforcing a maximum decompressed size and allowing excessive heap allocation that can make LAPI unreachable. This issue is fixed in version 1.7.8.",
  "id": "CVE-2026-44981",
  "modified": "2026-07-19T03:31:06.606576155Z",
  "published": "2026-07-16T19:47:30.747Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44981.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44981"
    },
    {
      "type": "FIX",
      "url": "https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30"
    },
    {
      "type": "FIX",
      "url": "https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression"
}