{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-102490",
  "revision": 1,
  "title": "Zammad Packages — Local Escalation to Root",
  "summary": "Zammad services from the Linux packages started as root and ran files the zammad account could change. A local attacker with write access as that account could become root within seconds. Source and official container installs are not affected.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.8,
    "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.10936,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2026-10-02",
    "kev_due": "2026-10-05",
    "prerequisites": "File system write privileges as the unprivileged zammad service account. CVE-2026-102489 can supply this foothold."
  },
  "mitre_attack": [
    "T1068"
  ],
  "kill_chain": "privilege_escalation",
  "recommended_action": "Follow Zammad's advisory for CVE-2026-102489 and CVE-2026-102490 on every packaged install.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "published_at",
        "references"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-102490",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added",
        "exploitation.kev_due"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-102490",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "subtitle",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-102490",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102490",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://github.com/zammad/zammad/security/advisories/GHSA-p97w-927q-8vxq"
    },
    {
      "type": "vendor_advisory",
      "url": "https://zammad.com/en/advisories/cve-2026-102489-cve-2026-102490"
    },
    {
      "type": "writeup",
      "url": "https://csirt.divd.nl/CVE-2026-102490"
    }
  ],
  "published_at": "2026-09-30T17:16:40.707Z",
  "issued_at": "2026-11-05T08:06:18.021Z",
  "tags": [
    "zammad",
    "privilege-escalation"
  ]
}