CVE-2023-49841 (GCVE-0-2023-49841)

Vulnerability from cvelistv5 – Published: 2023-12-14 15:56 – Updated: 2026-04-28 16:08
VLAI
Title
WordPress Optin Forms Plugin <= 1.3.3 is vulnerable to Cross Site Scripting (XSS)
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FancyThemes Optin Forms – Simple List Building Plugin for WordPress allows Stored XSS.This issue affects Optin Forms – Simple List Building Plugin for WordPress: from n/a through 1.3.3.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version CPE status
FancyThemes Optin Forms – Simple List Building Plugin for WordPress Affected: n/a , ≤ 1.3.3 (custom)
guessed Create a notification for this product.
Credits
DoYeon Park / p6rkdoye0n (Patchstack Alliance)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T22:01:26.029Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "packageName": "optin-forms",
          "product": "Optin Forms \u2013 Simple List Building Plugin for WordPress",
          "vendor": "FancyThemes",
          "versions": [
            {
              "lessThanOrEqual": "1.3.3",
              "status": "affected",
              "version": "n/a",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "DoYeon Park / p6rkdoye0n (Patchstack Alliance)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability in FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress allows Stored XSS.\u003cp\u003eThis issue affects Optin Forms \u2013 Simple List Building Plugin for WordPress: from n/a through 1.3.3.\u003c/p\u003e"
            }
          ],
          "value": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability in FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress allows Stored XSS.This issue affects Optin Forms \u2013 Simple List Building Plugin for WordPress: from n/a through 1.3.3."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-592 Stored XSS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-28T16:08:58.192Z",
        "orgId": "21595511-bba5-4825-b968-b78d1f9984a3",
        "shortName": "Patchstack"
      },
      "references": [
        {
          "tags": [
            "vdb-entry"
          ],
          "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "WordPress Optin Forms Plugin \u003c= 1.3.3 is vulnerable to Cross Site Scripting (XSS)",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3",
    "assignerShortName": "Patchstack",
    "cveId": "CVE-2023-49841",
    "datePublished": "2023-12-14T15:56:47.509Z",
    "dateReserved": "2023-11-30T17:12:29.822Z",
    "dateUpdated": "2026-04-28T16:08:58.192Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-49841",
      "date": "2026-09-22",
      "epss": "0.00386",
      "percentile": "0.32529"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:fancythemes:optin_forms:*:*:*:*:*:wordpress:*:*",
                  "matchCriteriaId": "F5751A57-DB3A-4383-81E5-6FE187D7F239",
                  "versionEndIncluding": "1.3.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability in FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress allows Stored XSS.This issue affects Optin Forms \u2013 Simple List Building Plugin for WordPress: from n/a through 1.3.3.\n\n"
        },
        {
          "lang": "es",
          "value": "Neutralizaci\u00f3n inadecuada de la entrada durante la vulnerabilidad de generaci\u00f3n de p\u00e1ginas web (\u0027cross-site Scripting\u0027) en FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress permite almacenar XSS. Este problema afecta a Optin Forms \u2013 Simple List Building Plugin for WordPress: desde n/a hasta 1.3.3."
        }
      ],
      "id": "CVE-2023-49841",
      "lastModified": "2024-11-21T08:33:56.447",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
              "version": "3.1"
            },
            "exploitabilityScore": 1.7,
            "impactScore": 3.7,
            "source": "audit@patchstack.com",
            "type": "Secondary"
          },
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.8,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 1.7,
            "impactScore": 2.7,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2023-12-14T16:15:52.540",
      "references": [
        {
          "source": "audit@patchstack.com",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
        }
      ],
      "sourceIdentifier": "audit@patchstack.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-79"
            }
          ],
          "source": "audit@patchstack.com",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://wordpress.org/plugins",
                "defaultStatus": "unaffected",
                "packageName": "optin-forms",
                "product": "Optin Forms \u2013 Simple List Building Plugin for WordPress",
                "vendor": "FancyThemes",
                "versions": [
                  {
                    "lessThanOrEqual": "1.3.3",
                    "status": "affected",
                    "version": "n/a",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "audit@patchstack.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:fancythemes:optin_forms:*:*:*:*:*:wordpress:*:*",
                    "matchCriteriaId": "F5751A57-DB3A-4383-81E5-6FE187D7F239",
                    "versionEndIncluding": "1.3.3",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability in FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress allows Stored XSS.This issue affects Optin Forms \u2013 Simple List Building Plugin for WordPress: from n/a through 1.3.3."
          },
          {
            "lang": "es",
            "value": "Neutralizaci\u00f3n inadecuada de la entrada durante la vulnerabilidad de generaci\u00f3n de p\u00e1ginas web (\u0027cross-site Scripting\u0027) en FancyThemes Optin Forms \u2013 Simple List Building Plugin for WordPress permite almacenar XSS. Este problema afecta a Optin Forms \u2013 Simple List Building Plugin for WordPress: desde n/a hasta 1.3.3."
          }
        ],
        "id": "CVE-2023-49841",
        "lastModified": "2026-06-17T06:36:35.473",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 1.7,
              "impactScore": 3.7,
              "source": "audit@patchstack.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.7,
              "impactScore": 2.7,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2023-12-14T16:15:52.540",
        "references": [
          {
            "source": "audit@patchstack.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://patchstack.com/database/vulnerability/optin-forms/wordpress-optin-forms-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve"
          }
        ],
        "sourceIdentifier": "audit@patchstack.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "audit@patchstack.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-04-29T01:07:15+00:00",
      "cve": "CVE-2023-49841",
      "id": "CVE-2023-49841",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "WordPress Optin Forms Plugin \u003c= 1.3.3 is vulnerable to Cross Site Scripting (XSS)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-49841.json",
      "version": "3"
    }
  }
}



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.



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.