CVE-2026-109215

{
  "id": "CVE-2026-109215",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-29T10:17:02.727",
  "lastModified": "2026-10-29T14:56:26.107",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bbp_reply_content' parameter in all versions up to, and including, 7.9.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that an administrator has enabled Viewport Images (VPI) and configured a VPI filename that matches an image the attacker can embed in user-generated content — such as a bbPress topic where Subscriber-level Participants are permitted to post replies containing raw img tags."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "litespeedtech",
          "product": "LiteSpeed Cache",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "7.9.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-29T10:31:58.165242Z",
          "id": "CVE-2026-109215",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/litespeedtech/lscache_wp/commit/0fc5f9ad69a138b8ee1fe2d07a5e9ac2574e1eb0",
      "source": "[email protected]"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/media.cls.php#L936",
      "source": "[email protected]"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/media.cls.php#L968",
      "source": "[email protected]"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/utility.cls.php#L299",
      "source": "[email protected]"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.2/src/media.cls.php",
      "source": "[email protected]"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/8bf9b130-bb1e-43fc-b5c9-337646b8976e?source=cve",
      "source": "[email protected]"
    }
  ]
}