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4 vulnerabilities found for EWWW Image Optimizer by Unknown

CVE-2026-91049 (GCVE-0-2026-91049)
Vulnerability from cvelistv5
Published
2026-11-05 06:00
Modified
2026-11-06 12:02
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE
Summary
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.
References
Impacted products
Vendor Product Version
Unknown EWWW Image Optimizer Version: 8.7.4   ≤
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{
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          {
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                "version": "2.0.3"
              },
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        ],
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              }
            ]
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        ],
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "EWWW Image Optimizer 8.7.4 - 8.9.0 - Author+ Stored XSS via \u0027data-script\u0027 Lazy Load Attribute",
      "x_generator": {
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    "dateReserved": "2026-09-14T17:15:02.383Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-91072 (GCVE-0-2026-91072)
Vulnerability from cvelistv5
Published
2026-09-30 06:00
Modified
2026-09-30 13:37
Severity ?
4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L
CWE
Summary
The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file migration routine to the current site's own uploads directory, letting an attacker with Administrator-level access rename or delete existing WebP-derivative image files outside that scope, including, on a multisite network, files belonging to a different site they have no access to.
References
Impacted products
Vendor Product Version
Unknown EWWW Image Optimizer Version: 0   ≤
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Show details on NVD website

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          {
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              },
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                "description": "CWE-73 External Control of File Name or Path",
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        ],
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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        }
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      ],
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      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "EWWW Image Optimizer \u003c 8.8.0 - Admin+ WebP File Rename and Deletion via Unrestricted Path in WebP Migration Handler",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-91051 (GCVE-0-2026-91051)
Vulnerability from cvelistv5
Published
2026-09-30 06:00
Modified
2026-09-30 13:37
Severity ?
6.6 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
Summary
The EWWW Image Optimizer WordPress plugin before 8.8.0 does not prevent authenticated users with author-level permissions from storing a serialized value in a post meta field that is deserialized when the post is rendered, allowing them to perform PHP Object Injection, which can lead to remote code execution when a suitable gadget chain is present via another installed EWWW Image Optimizer WordPress plugin before 8.8.0 or .
References
Impacted products
Vendor Product Version
Unknown EWWW Image Optimizer Version: 8.6.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
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      {
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              "attackVector": "NETWORK",
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
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              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
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      ],
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      },
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-91011 (GCVE-0-2026-91011)
Vulnerability from cvelistv5
Published
2026-09-17 06:00
Modified
2026-09-17 12:26
Severity ?
6.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE
Summary
The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page.
References
Impacted products
Vendor Product Version
Unknown EWWW Image Optimizer Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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