Vulnerability-Lookup

FKIE_CVE-2021-39321

Vulnerability from fkie_nvd - Published: 2021-10-21 20:15 - Updated: 2026-06-17 04:03

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

Version 3.3.23 of the Sassy Social Share WordPress plugin is vulnerable to PHP Object Injection via the wp_ajax_heateor_sss_import_config AJAX action due to deserialization of unvalidated user supplied inputs via the import_config function found in the ~/admin/class-sassy-social-share-admin.php file. This can be exploited by underprivileged authenticated users due to a missing capability check on the import_config function.

References

URL	Tags
security@wordfence.com	https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php	Patch, Third Party Advisory
security@wordfence.com	https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/	Exploit, Third Party Advisory
security@wordfence.com	https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321	Third Party Advisory

Impacted products

	Vendor	Product	Version
	heateor	sassy_social_share	3.3.23

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Sassy Social Share",
          "vendor": "Sassy Social Share",
          "versions": [
            {
              "status": "affected",
              "version": "3.3.23"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:heateor:sassy_social_share:3.3.23:*:*:*:*:wordpress:*:*",
              "matchCriteriaId": "85E2FF17-725D-4A71-8694-AC75A682A27A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Version 3.3.23 of the Sassy Social Share WordPress plugin is vulnerable to PHP Object Injection via the wp_ajax_heateor_sss_import_config AJAX action due to deserialization of unvalidated user supplied inputs via the import_config function found in the ~/admin/class-sassy-social-share-admin.php file. This can be exploited by underprivileged authenticated users due to a missing capability check on the import_config function."
    },
    {
      "lang": "es",
      "value": "La versi\u00f3n 3.3.23 del plugin Sassy Social Share de WordPress es vulnerable a una inyecci\u00f3n de objetos de PHP por medio de la acci\u00f3n AJAX wp_ajax_heateor_sss_import_config debido a una deserializaci\u00f3n de entradas no validadas por el usuario por medio de la funci\u00f3n import_config que se encuentra en el archivo ~/admin/class-sassy-social-share-admin.php. Esto puede ser explotado por usuarios autenticados no privilegiados debido a una falta de comprobaci\u00f3n de capacidades en la funci\u00f3n import_config"
    }
  ],
  "id": "CVE-2021-39321",
  "lastModified": "2026-06-17T04:03:32.890",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-39321",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-03-31T17:58:00.476244Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-10-21T20:15:07.857",
  "references": [
    {
      "source": "security@wordfence.com",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php"
    },
    {
      "source": "security@wordfence.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/"
    },
    {
      "source": "security@wordfence.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}

CVE-2021-39321 (GCVE-0-2021-39321)

Vulnerability from cvelistv5 – Published: 2021-10-21 19:38 – Updated: 2025-03-31 17:58

Title

Sassy Social Share 3.3.23 PHP Object Injection

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-31 17:58 UTC

CWE

CWE-863 - Incorrect Authorization
CWE-502 - Deserialization of Untrusted Data

Assigner

Wordfence mitre root

References

3 references

URL	Tags
https://www.wordfence.com/vulnerability-advisorie…	x_refsource_MISC
https://www.wordfence.com/blog/2021/10/vulnerabil…	x_refsource_MISC
https://plugins.trac.wordpress.org/changeset/2600…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Sassy Social Share	Sassy Social Share	Affected: 3.3.23

Date Public

2021-10-21 00:00

Credits

Chloe Chamberland, Wordfence

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:06:41.490Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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              "x_transferred"
            ],
            "url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39321"
          },
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.wordfence.com/blog/2021/10/vulnerability-patched-in-sassy-social-share-plugin/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-39321",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-31T17:58:00.476244Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-31T17:58:03.771Z",
          "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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          "vendor": "Sassy Social Share",
          "versions": [
            {
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      ],
      "metrics": [
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            "attackVector": "NETWORK",
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          "url": "https://plugins.trac.wordpress.org/changeset/2600464/sassy-social-share/trunk/admin/class-sassy-social-share-admin.php"
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      "solutions": [
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.