AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-100857",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-09-27T01:28:48.450Z",
    "dateReserved": "2026-09-27T00:20:03.854Z",
    "datePublished": "2026-09-27T01:28:48.450Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-09-27T01:28:48.450Z"
      },
      "datePublic": "2026-03-08T00:00:00.000Z",
      "title": "AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation",
      "descriptions": [
        {
          "lang": "en",
          "value": "AzuraCast before 0.23.4 contains a code injection vulnerability in the ConfigWriter::cleanUpString() method that fails to sanitize Liquidsoap string interpolation sequences, allowing authenticated users with Media or Profile permissions to inject arbitrary Liquidsoap code into station configuration. Attackers can inject #{process.run()} expressions into playlist URLs or station metadata fields that execute shell commands as the azuracast user when the station restarts."
        }
      ],
      "affected": [
        {
          "vendor": "AzuraCast",
          "product": "AzuraCast",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "0.23.4"
            },
            {
              "version": "0.23.4",
              "status": "unaffected",
              "versionType": "semver"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Improper Control of Generation of Code ('Code Injection')",
              "cweId": "CWE-94",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-93fx-5qgc-wr38",
          "name": "GitHub Security Advisory (GHSA-93fx-5qgc-wr38)",
          "tags": [
            "vendor-advisory"
          ]
        },
        {
          "url": "https://www.vulncheck.com/advisories/azuracast-before-0.23.4-remote-code-execution-via-liquidsoap-string-interpolation",
          "name": "VulnCheck Advisory: AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation",
          "tags": [
            "third-party-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS"
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "REQUIRED",
            "scope": "UNCHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH"
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "q1uf3ng",
          "type": "reporter"
        }
      ]
    }
  }
}