CVE-2026-91049

Full vulnerability record from the local CVENow database.

Description

The EWWW Image Optimizer WordPress plugin before 8.9.1 does not properly sanitize and restrict a value in post content before using it to dynamically load and execute a script in the page, allowing authenticated attackers with author-level access and above to inject arbitrary web scripts that run in the session of any user who views the affected page, including administrators. This is an incomplete fix of CVE-2026-15446: the origin and path restrictions added from 8.7.4 onward were each bypassable, so versions 8.7.4 through 8.9.0 remain affected.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

[email protected]

Published

2026-11-05 06:17:10.317000

Last modified

2026-11-05 06:17:10.317000

View original CVE JSON

{
  "id": "CVE-2026-91049",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T06:17:10.317",
  "lastModified": "2026-11-05T06:17:10.317",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The EWWW Image Optimizer WordPress plugin before 8.9.1 does not properly sanitize and restrict a value in post content before using it to dynamically load and execute a script in the page, allowing authenticated attackers with author-level access and above to inject arbitrary web scripts that run in the session of any user who views the affected page, including administrators.\n\nThis is an incomplete fix of CVE-2026-15446: the origin and path restrictions added from 8.7.4 onward were each bypassable, so versions 8.7.4 through 8.9.0 remain affected."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "EWWW Image Optimizer",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8.7.4",
              "lessThan": "8.9.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/cdaf3779-3e8a-4997-9868-707bcc06f9a7/",
      "source": "[email protected]"
    }
  ]
}