{
  "cveId": "CVE-2026-42154",
  "url": "https://patchblox.com/security/cve/CVE-2026-42154",
  "summary": "CVE-2026-42154 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-42154, released May 4, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Prometheus: remote read endpoint allows denial of service via crafted snappy payload",
  "description": "Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.",
  "published": "2026-05-04T18:13:12Z",
  "severity": "Moderate",
  "cvss": 8.2,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
  "cwe": "Uncontrolled Resource Consumption",
  "epss": 0.00813,
  "epssPercentile": 0.57239,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42154",
  "fixes": [
    {
      "platform": "linux",
      "product": "amazon-cloudwatch-agent",
      "release": "amzn 2023",
      "fixedVersion": "1.300066.2-2.amzn2023",
      "fix": "ALAS2023-2026-1747",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1747",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "flightctl",
      "release": "RHEL 10",
      "fixedVersion": "1.1.3-1.el10em",
      "fix": "RHSA-2026:41019",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-41019",
      "released": "2026-05-22T15:01:21Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260723T184607-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21483-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21483-1",
      "released": "2026-07-30T09:09:47Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "RHEL 10",
      "fixedVersion": "0.152.1-1.el10_0",
      "fix": "RHSA-2026:53413",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-53413",
      "released": "2026-07-02T14:48:02Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "RHEL 9",
      "fixedVersion": "0:0.152.1-1.el9_8",
      "fix": "RHSA-2026:34359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-34359",
      "released": "2026-07-02T14:47:50Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "almalinux 10",
      "fixedVersion": "0.152.1-1.el10_2",
      "fix": "ALSA-2026:34357",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-34357",
      "released": "2026-07-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "almalinux 9",
      "fixedVersion": "0.152.1-1.el9_8",
      "fix": "ALSA-2026:34359",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-34359",
      "released": "2026-07-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "rocky 10",
      "fixedVersion": "0:0.152.1-1.el10_2",
      "fix": "RLSA-2026:34357",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-34357",
      "released": "2026-07-07T12:05:23Z"
    },
    {
      "platform": "linux",
      "product": "opentelemetry-collector",
      "release": "rocky 9",
      "fixedVersion": "0:0.152.1-1.el9_8",
      "fix": "RLSA-2026:34359",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-34359",
      "released": "2026-07-05T12:03:16Z"
    },
    {
      "platform": "linux",
      "product": "prometheus",
      "release": "Debian 14",
      "fixedVersion": "3.5.3\u002Bds1-1",
      "fix": "DEBIAN-CVE-2026-42154",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42154",
      "released": "2026-05-04T19:16:04Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}