{
  "cveId": "CVE-2023-40577",
  "url": "https://patchblox.com/security/cve/CVE-2023-40577",
  "summary": "CVE-2023-40577 is fixed in 2 products on 1 platform, first by golang-github-prometheus-alertmanager-dev 0.6.2\u002Bds-3ubuntu0.1\u002Besm1, released August 24, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "prometheus-alertmanager: Alertmanager handles alerts sent by client applications such as the Prometheus server",
  "description": "Alertmanager handles alerts sent by client applications such as the Prometheus server. An attacker with the permission to perform POST requests on the /api/v1/alerts endpoint could be able to execute arbitrary JavaScript code on the users of Prometheus Alertmanager. This issue has been fixed in Alertmanager version 0.2.51.",
  "published": "2023-08-24T18:15:00Z",
  "severity": "medium",
  "cvss": 5.4,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
  "epss": 0.00634,
  "epssPercentile": 0.50637,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "golang-github-prometheus-alertmanager-dev",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.2\u002Bds-3ubuntu0.1\u002Besm1",
      "fix": "golang-github-prometheus-alertmanager-dev 0.6.2\u002Bds-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-golang-github-prometheus-alertmanager-dev-0.6.2-ds-3ubuntu0.1-esm1",
      "released": "2023-08-24T18:15:00Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-prometheus-alertmanager-dev",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.15.3\u002Bds-3ubuntu1.2",
      "fix": "golang-github-prometheus-alertmanager-dev 0.15.3\u002Bds-3ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-golang-github-prometheus-alertmanager-dev-0.15.3-ds-3ubuntu1.2",
      "released": "2023-08-24T18:15:00Z"
    },
    {
      "platform": "linux",
      "product": "golang-github-prometheus-alertmanager-dev",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "0.23.0-4ubuntu0.2\u002Besm1",
      "fix": "golang-github-prometheus-alertmanager-dev 0.23.0-4ubuntu0.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-golang-github-prometheus-alertmanager-dev-0.23.0-4ubuntu0.2-esm1",
      "released": "2023-08-24T18:15:00Z"
    },
    {
      "platform": "linux",
      "product": "prometheus-alertmanager",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.26.0\u002Bds-1",
      "fix": "DEBIAN-CVE-2023-40577",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-40577",
      "released": "2023-08-25T01:15:09Z"
    },
    {
      "platform": "linux",
      "product": "prometheus-alertmanager",
      "release": "Debian 14",
      "fixedVersion": "0.26.0\u002Bds-1",
      "fix": "DEBIAN-CVE-2023-40577",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-40577",
      "released": "2023-08-25T01:15:09Z"
    },
    {
      "platform": "linux",
      "product": "prometheus-alertmanager",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.6.2\u002Bds-3ubuntu0.1\u002Besm1",
      "fix": "prometheus-alertmanager 0.6.2\u002Bds-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-prometheus-alertmanager-0.6.2-ds-3ubuntu0.1-esm1",
      "released": "2023-08-24T18:15:00Z"
    },
    {
      "platform": "linux",
      "product": "prometheus-alertmanager",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.15.3\u002Bds-3ubuntu1.2",
      "fix": "prometheus-alertmanager 0.15.3\u002Bds-3ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-prometheus-alertmanager-0.15.3-ds-3ubuntu1.2",
      "released": "2023-08-24T18:15:00Z"
    },
    {
      "platform": "linux",
      "product": "prometheus-alertmanager",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "0.23.0-4ubuntu0.2\u002Besm1",
      "fix": "prometheus-alertmanager 0.23.0-4ubuntu0.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-prometheus-alertmanager-0.23.0-4ubuntu0.2-esm1",
      "released": "2023-08-24T18:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}