GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2025-4126 (GCVE-0-2025-4126)

Vulnerability from cvelistv5 – Published: 2025-05-15 03:21 – Updated: 2026-04-08 17:14
VLAI
Title
EG-Series <= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Summary
The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-15 14:10 UTC
CWE
  • CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Assigner
References
Impacted products
Vendor Product Version CPE status
emmanuelg EG-Series Affected: 0 , ≤ 2.1.1 (semver)
guessed Create a notification for this product.
Credits
Muhammad Yudha - DJ
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-4126",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-15T14:10:43.569748Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-15T14:10:57.806Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "EG-Series",
          "vendor": "emmanuelg",
          "versions": [
            {
              "lessThanOrEqual": "2.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhammad Yudha - DJ"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page."
        }
      ],
      "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": "2026-04-08T17:14:33.136Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-05-14T14:24:40.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "EG-Series \u003c= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2025-4126",
    "datePublished": "2025-05-15T03:21:39.238Z",
    "dateReserved": "2025-04-30T07:41:32.308Z",
    "dateUpdated": "2026-04-08T17:14:33.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-4126",
      "date": "2026-09-16",
      "epss": "0.00275",
      "percentile": "0.2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-4126\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2025-05-15T04:16:17.283\",\"lastModified\":\"2026-06-17T09:32:33.470\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.\"},{\"lang\":\"es\",\"value\":\"El complemento EG-Series para WordPress es vulnerable a Cross-Site Scripting almacenado a trav\u00e9s del shortcode [series] en todas las versiones hasta la 2.1.1 incluida, debido a una depuraci\u00f3n de entrada insuficiente y al escape de salida en los atributos proporcionados por el usuario en la funci\u00f3n shortcode_title. Esto permite a atacantes autenticados (con acceso de colaborador o superior, en sitios con el complemento Classic Editor activado) inyectar c\u00f3digo JavaScript arbitrario en el atributo titletag, que se ejecutar\u00e1 cada vez que un usuario acceda a una p\u00e1gina inyectada.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"emmanuelg\",\"product\":\"EG-Series\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"2.1.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":6.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.1,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-05-15T14:10:43.569748Z\",\"id\":\"CVE-2025-4126\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-80\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve\",\"source\":\"security@wordfence.com\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T08:40:37+00:00",
      "cve": "CVE-2025-4126",
      "id": "CVE-2025-4126",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "EG-Series \u003c= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-4126.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-4126\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-05-15T14:10:43.569748Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-05-15T14:10:53.112Z\"}}], \"cna\": {\"title\": \"EG-Series \u003c= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"muhammad yudha\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"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\"}}], \"affected\": [{\"vendor\": \"emmanuelg\", \"product\": \"EG-Series\", \"versions\": [{\"status\": \"affected\", \"version\": \"*\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2.1.1\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2025-05-14T14:24:40.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-80\", \"description\": \"CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2025-05-15T03:21:39.238Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-4126\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-15T14:10:57.806Z\", \"dateReserved\": \"2025-04-30T07:41:32.308Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2025-05-15T03:21:39.238Z\", \"assignerShortName\": \"Wordfence\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.