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

CVE-2021-34637 (GCVE-0-2021-34637)

Vulnerability from cvelistv5 – Published: 2021-08-02 20:39 – Updated: 2024-09-17 03:32
VLAI
Title
Post Index <= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting
Summary
The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5.
CWE
  • CWE-352 - Cross-Site Request Forgery (CSRF)
References
Impacted products
Vendor Product Version CPE status
iTux Post Index Affected: 0.7.5 , ≤ 0.7.5 (custom)
guessed Create a notification for this product.
Date Public
2021-07-26 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:19:47.883Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Post Index",
          "vendor": "iTux",
          "versions": [
            {
              "lessThanOrEqual": "0.7.5",
              "status": "affected",
              "version": "0.7.5",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Kentaro Kuroki, Cryptography Laboratory in Tokyo Denki University"
        }
      ],
      "datePublic": "2021-07-26T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-352",
              "description": "CWE-352 Cross-Site Request Forgery (CSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-02T20:39:11.000Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Uninstall plugin from WordPress site."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Post Index \u003c= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "AKA": "Wordfence",
          "ASSIGNER": "security@wordfence.com",
          "DATE_PUBLIC": "2021-07-26T06:00:00.000Z",
          "ID": "CVE-2021-34637",
          "STATE": "PUBLIC",
          "TITLE": "Post Index \u003c= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Post Index",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_name": "0.7.5",
                            "version_value": "0.7.5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "iTux"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Kentaro Kuroki, Cryptography Laboratory in Tokyo Denki University"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-352 Cross-Site Request Forgery (CSRF)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637",
              "refsource": "MISC",
              "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
            },
            {
              "name": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86",
              "refsource": "MISC",
              "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Uninstall plugin from WordPress site."
          }
        ],
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2021-34637",
    "datePublished": "2021-08-02T20:39:11.480Z",
    "dateReserved": "2021-06-10T00:00:00.000Z",
    "dateUpdated": "2024-09-17T03:32:58.195Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-34637",
      "date": "2026-09-18",
      "epss": "0.007",
      "percentile": "0.51653"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:post_index_project:post_index:*:*:*:*:*:wordpress:*:*",
                  "matchCriteriaId": "6D146081-361B-4FA9-AA87-779C5B78C584",
                  "versionEndIncluding": "0.7.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5."
        },
        {
          "lang": "es",
          "value": "El plugin Post Index de WordPress es vulnerable a un ataque ded tipo Cross-Site Request Forgery por medio de la funci\u00f3n OptionsPage que se encuentra en el archivo ~/php/settings.php, lo que permite a atacantes inyectar scripts web arbitrarios, en versiones hasta 0.7.5 incluy\u00e9ndola"
        }
      ],
      "id": "CVE-2021-34637",
      "lastModified": "2024-11-21T06:10:51.863",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 6.8,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": true
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 2.8,
            "impactScore": 5.9,
            "source": "security@wordfence.com",
            "type": "Secondary"
          },
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 2.8,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2021-08-02T21:15:08.660",
      "references": [
        {
          "source": "security@wordfence.com",
          "tags": [
            "Exploit",
            "Third Party Advisory"
          ],
          "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
        },
        {
          "source": "security@wordfence.com",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Exploit",
            "Third Party Advisory"
          ],
          "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
        }
      ],
      "sourceIdentifier": "security@wordfence.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-352"
            }
          ],
          "source": "security@wordfence.com",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-352"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:post_index_project:post_index:*:*:*:*:*:wordpress:*:*",
                    "matchCriteriaId": "6D146081-361B-4FA9-AA87-779C5B78C584",
                    "versionEndIncluding": "0.7.5",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The Post Index WordPress plugin is vulnerable to Cross-Site Request Forgery via the OptionsPage function found in the ~/php/settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.5."
          },
          {
            "lang": "es",
            "value": "El plugin Post Index de WordPress es vulnerable a un ataque ded tipo Cross-Site Request Forgery por medio de la funci\u00f3n OptionsPage que se encuentra en el archivo ~/php/settings.php, lo que permite a atacantes inyectar scripts web arbitrarios, en versiones hasta 0.7.5 incluy\u00e9ndola"
          }
        ],
        "id": "CVE-2021-34637",
        "lastModified": "2024-11-21T06:10:51.863",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "security@wordfence.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-08-02T21:15:08.660",
        "references": [
          {
            "source": "security@wordfence.com",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
          },
          {
            "source": "security@wordfence.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://plugins.trac.wordpress.org/browser/post-index/trunk/php/settings.php#L86"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34637"
          }
        ],
        "sourceIdentifier": "security@wordfence.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-352"
              }
            ],
            "source": "security@wordfence.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-352"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T13:55:05+00:00",
      "cve": "CVE-2021-34637",
      "id": "CVE-2021-34637",
      "initial_release_date": "2021-07-26T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Post Index \u003c= 0.7.5 Cross-Site Request Forgery to Stored Cross-Site Scripting",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-34637.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…