OTRS Community Edition OS Command Injection via PGP Configuration

{
  "id": "7f30741db0bdfe0d77836e9f41d025acc5b295cecfb057ce961681e162168018",
  "url": "https://osv.dev/vulnerability/CVE-2026-53804",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OTRS Community Edition OS Command Injection via PGP Configuration",
    "summary": "OTRS Community Edition contains an authenticated OS command injection vulnerability in the PGP encryption module that allows administrators to execute arbitrary operating-system commands by supplying crafted values for the PGP binary path and command options. Administrator-supplied configuration values are concatenated without sanitization into a shell command, enabling arbitrary command execution as the web server process user during normal ticket operations after the malicious configuration is deployed.",
    "evidence": "osv:CVE-2026-53804",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-53804",
      "aliases": [
        "CVE-2026-53804"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/centuran/otrs-community-edition",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "0a674ad2fa8c61c889e708437432cfb1473c74cf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "6.0.41"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.0.41",
            "v6.0.40",
            "v6.0.39",
            "v6.0.38",
            "v6.0.37",
            "v6.0.33",
            "v6.0.32"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53804.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.337482765Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53804.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53804",
        "https://www.vulncheck.com/advisories/otrs-community-edition-os-command-injection-via-pgp-configuration",
        "https://github.com/Centuran/OTRS-Community-Edition",
        "https://h00die-gr3y.github.io/research/cve-2026-53804/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-78"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53804.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53804",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504844,
  "published_at": "2026-08-20T21:13:24.493+00:00"
}