ubuntu-cve-2026-44981
Vulnerability from osv_ubuntu
Published
2026-07-17 00:00
Modified
2026-07-17 00:00
Summary
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.

Severity
8.2 (High)
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
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "crowdsec",
            "binary_version": "1.4.6-6ubuntu0.24.04.2+esm2"
          },
          {
            "binary_name": "golang-github-crowdsecurity-crowdsec-dev",
            "binary_version": "1.4.6-6ubuntu0.24.04.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "crowdsec",
        "purl": "pkg:deb/ubuntu/crowdsec@1.4.6-6ubuntu0.24.04.2+esm2?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.6-6build1",
        "1.4.6-6ubuntu0.24.04.1",
        "1.4.6-6ubuntu0.24.04.1+esm1",
        "1.4.6-6ubuntu0.24.04.1+esm2",
        "1.4.6-6ubuntu0.24.04.2",
        "1.4.6-6ubuntu0.24.04.2+esm1",
        "1.4.6-6ubuntu0.24.04.2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "crowdsec",
            "binary_version": "1.4.6-10.1ubuntu0.26.04.1~esm1"
          },
          {
            "binary_name": "golang-github-crowdsecurity-crowdsec-dev",
            "binary_version": "1.4.6-10.1ubuntu0.26.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "crowdsec",
        "purl": "pkg:deb/ubuntu/crowdsec@1.4.6-10.1ubuntu0.26.04.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.6-10",
        "1.4.6-10.1",
        "1.4.6-10.1ubuntu0.26.04.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "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": "UBUNTU-CVE-2026-44981",
  "modified": "2026-07-17T00:00:00Z",
  "published": "2026-07-17T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-44981"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-44981"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/crowdsecurity/crowdsec/commit/54a0dfe6c16b7687b0da6634e0b19ef0f5d9bb30"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/crowdsecurity/crowdsec/commit/56d0d6915f7f25941dc5b4f484028646f6601a37"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-273h-gvwr-c3qj"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "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"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-44981"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.