CVE-2026-113500

LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via Font Display Optimization

Unscored

The LiteSpeed Cache WordPress plugin before 7.9.2 does not limit one of its HTML optimization routines to stylesheet content, so it can delete the markup that closes an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comments are published to inject event-handler attributes that run JavaScript in the browser of any visitor, including a logged-in administrator, viewing front-end pages while the optimization is enabled.

Assigner
WPScan
Published
2026-10-23
Updated
2026-10-23
Reserved
2026-10-20

Affected

VendorProductVersions
Unknown LiteSpeed Cache < 7.9.2 (affected)
others: unaffected

References

Full CVE JSON record (5.2)

API · GitHub · cve.org

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "LiteSpeed Cache",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "7.9.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jakub Herman"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The LiteSpeed Cache WordPress plugin before 7.9.2 does not limit one of its HTML optimization routines to stylesheet content, so it can delete the markup that closes an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comments are published to inject event-handler attributes that run JavaScript in the browser of any visitor, including a logged-in administrator, viewing front-end pages while the optimization is enabled."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79 Cross-Site Scripting (XSS)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T06:00:20.249Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/f841e09f-275c-4c10-a5b7-af294f92db29/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "LiteSpeed Cache \u003c 7.9.2 - Unauthenticated Stored XSS via Font Display Optimization",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-113500",
    "datePublished": "2026-10-23T06:00:20.249Z",
    "dateReserved": "2026-10-20T09:59:40.337Z",
    "dateUpdated": "2026-10-23T06:00:20.249Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}