CVE-2026-114731

{
  "id": "CVE-2026-114731",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-22T03:16:38.363",
  "lastModified": "2026-10-22T16:45:49.550",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vulnerability in the CSS proxy (the utils/modcss action). The fetched stylesheet was read into memory in full, with no size limit and no read timeout, so a stylesheet URL referencing an attacker-controlled host could be used to exhaust server memory. Upstream fixed this in the commit “Add a size limit to the CSS proxy content processing”, which caps the response at 5 MB, reads it as a stream and applies a read timeout."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Roundcube",
          "product": "Webmail",
          "defaultStatus": "unaffected",
          "repo": "https://github.com/roundcube/roundcubemail/",
          "versions": [
            {
              "version": "1.6.0",
              "lessThan": "1.6.20",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "1.7.0",
              "lessThan": "1.7.5",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://bugs.debian.org/1151279",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5",
      "source": "[email protected]"
    },
    {
      "url": "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5",
      "source": "[email protected]"
    }
  ]
}