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2 vulnerabilities found for Speed Optimizer – The All-In-One Performance-Boosting Plugin by siteground

CVE-2026-15421 (GCVE-0-2026-15421)
Vulnerability from cvelistv5
Published
2026-08-19 01:26
Modified
2026-08-20 15:36
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Speed Optimizer – The All-In-One Performance-Boosting Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Image Tag Attributes in all versions up to, and including, 7.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the site administrator has enabled the Lazy Load Media option in the plugin settings.
References
Impacted products
Vendor Product Version
siteground Speed Optimizer – The All-In-One Performance-Boosting Plugin Version: 0   ≤ 7.8.0
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                "id": "CVE-2026-15421",
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T13:34:35.297381Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        }
      ],
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            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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          ]
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      },
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        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.8.0/core/Lazy_Load/Lazy_Load_Images.php#L31"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/sg-cachepress/tags/7.8.0/core/Lazy_Load/Abstract_Lazy_Load.php#L109"
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        },
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        },
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          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3642965%40sg-cachepress%2Ftags%2F7.8.1\u0026old=3581843%40sg-cachepress%2Ftags%2F7.8.0"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fsg-cachepress/tags/7.8.0\u0026new_path=%2Fsg-cachepress/tags/7.8.1"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-18T13:17:17.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Speed Optimizer \u003c= 7.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Image Tag Attributes"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
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  "dataType": "CVE_RECORD",
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}

CVE-2019-25217 (GCVE-0-2019-25217)
Vulnerability from cvelistv5
Published
2024-10-16 06:43
Modified
2026-04-08 16:57
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Summary
The SiteGround Optimizer plugin for WordPress is vulnerable to authorization bypass leading to Remote Code Execution and Local File Inclusion in versions up to, and including, 5.0.12 due to incorrect use of an access control attribute on the switch_php function called via the /switch-php REST API route. This allows attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.
References
Impacted products
Vendor Product Version
siteground Speed Optimizer – The All-In-One Performance-Boosting Plugin Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
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            "cpes": [
              "cpe:2.3:a:siteground:speed_optimizer:*:*:*:*:*:*:*:*"
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        "metrics": [
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                  },
                  {
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-16T15:35:05.862279Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
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        }
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          }
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
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      },
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          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/657f3bd7-2cdc-4eb6-ba50-7c7fca468df0?source=cve"
        },
        {
          "url": "https://blog.sucuri.net/2019/03/vulnerability-disclosure-siteground-optimizer-caldera-forms.html"
        }
      ],
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          "time": "2019-03-14T00:00:00.000Z",
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