CVE-2026-109987

Full vulnerability record from the local CVENow database.

Description

The PixelYourSite WordPress plugin before 11.4.3, PixelYourSite Pro WordPress plugin before 12.6.8 do not sanitise and escape a cookie value before printing it into the page output, which, on a site running a full-page cache, allows unauthenticated attackers to store a Cross-Site Scripting payload in the cached page that is then served to other visitors.

Severity

HIGH

CVSS score

7.2 (v3.1)

Vulnerability status

Deferred

Source identifier

[email protected]

Published

2026-10-22 06:17:13.800000

Last modified

2026-10-22 15:16:14.027000

View original CVE JSON

{
  "id": "CVE-2026-109987",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-22T06:17:13.800",
  "lastModified": "2026-10-22T15:16:14.027",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The PixelYourSite  WordPress plugin before 11.4.3, PixelYourSite Pro WordPress plugin before 12.6.8 do not sanitise and escape a cookie value before printing it into the page output, which, on a site running a full-page cache, allows unauthenticated attackers to store a Cross-Site Scripting payload in the cached page that is then served to other visitors."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "PixelYourSite",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "11.4.3",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Unknown",
          "product": "PixelYourSite Pro",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "12.6.8",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-22T10:55:37.426798Z",
          "id": "CVE-2026-109987",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/80e1ed6d-dec5-4bfd-851d-3905fd42d23f/",
      "source": "[email protected]"
    }
  ]
}