github - ghsa-q494-c83w-2xrf

GHSA-Q494-C83W-2XRF

Vulnerability from github – Published: 2025-10-03 03:30 – Updated: 2025-10-03 03:30

Details

The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript event handlers. This vulnerability allows a user with Contributor access or higher to create a post containing a malicious JavaScript payload.

Severity ?

6.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-11241"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-80"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-03T02:15:30Z",
    "severity": "MODERATE"
  },
  "details": "The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript event handlers. This vulnerability allows a user with Contributor access or higher to create a post containing a malicious JavaScript payload.",
  "id": "GHSA-q494-c83w-2xrf",
  "modified": "2025-10-03T03:30:27Z",
  "published": "2025-10-03T03:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11241"
    },
    {
      "type": "WEB",
      "url": "https://developer.yoast.com/changelog/yoast-seo-premium/26.0"
    },
    {
      "type": "WEB",
      "url": "https://sec.stealthcopter.com/regexss"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a6e3645d-ed1b-4c51-a463-c2691cb7168d?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-11241 (GCVE-0-2025-11241)

Vulnerability from cvelistv5 – Published: 2025-10-03 01:56 – Updated: 2025-10-03 15:50

Title

Yoast SEO Premium 25.7-25.9 - Authenticated (Contributor+) Stored Cross-Site Scripting

Summary

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-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Assigner

Wordfence

References

URL

Tags

	https://www.wordfence.com/threat-intel/vulnerabil…
	https://developer.yoast.com/changelog/yoast-seo-p…
	https://sec.stealthcopter.com/regexss/

Impacted products

	Vendor	Product	Version
	n/a	Yoast SEO Premium	Affected: 25.7 , ≤ 25.9 (semver)

Credits

Matthew Rollings

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-11241",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-03T15:49:46.839381Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-03T15:50:01.453Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Yoast SEO Premium",
          "vendor": "n/a",
          "versions": [
            {
              "lessThanOrEqual": "25.9",
              "status": "affected",
              "version": "25.7",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Matthew Rollings"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript event handlers. This vulnerability allows a user with Contributor access or higher to create a post containing a malicious JavaScript payload."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-80",
              "description": "CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-03T01:56:44.222Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a6e3645d-ed1b-4c51-a463-c2691cb7168d?source=cve"
        },
        {
          "url": "https://developer.yoast.com/changelog/yoast-seo-premium/26.0/"
        },
        {
          "url": "https://sec.stealthcopter.com/regexss/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-10-02T00:00:00.000+00:00",
          "value": "Disclosed"
        }
      ],
      "title": "Yoast SEO Premium 25.7-25.9 - Authenticated (Contributor+) Stored Cross-Site Scripting"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2025-11241",
    "datePublished": "2025-10-03T01:56:44.222Z",
    "dateReserved": "2025-10-02T13:13:15.572Z",
    "dateUpdated": "2025-10-03T15:50:01.453Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q494-C83W-2XRF

CVE-2025-11241 (GCVE-0-2025-11241)

Tags

Sightings

Nomenclature