Vulnerability-Lookup

CVE-2021-20831 (GCVE-0-2021-20831)

Vulnerability from cvelistv5 – Published: 2021-10-13 08:31 – Updated: 2024-08-03 17:53

Summary

Cross-site request forgery (CSRF) vulnerability in OG Tags versions prior to 2.0.2 allows a remote attacker to hijack the authentication of administrators and unintended operation may be performed via unspecified vectors.

Severity

8.8 (High)


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

CWE

Cross-site request forgery

Assigner

jpcert jpcert root Scorecard

References

2 references

URL	Tags
https://wordpress.org/plugins/og-tags/	x_refsource_MISC
https://jvn.jp/en/jp/JVN29428319/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Mario Valney	OG Tags	Affected: versions prior to 2.0.2

Show details on NVD website

JSON

To clipboard

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EUVD-2026-21901

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 06:00

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

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  "date_reserved": "2026-10-02T06:00:08.691360+00:00",
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}

FKIE_CVE-2021-20831

Vulnerability from fkie_nvd - Published: 2021-10-13 09:15 - Updated: 2026-06-17 03:34

Severity

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

Summary

References

URL	Tags
vultures@jpcert.or.jp	https://jvn.jp/en/jp/JVN29428319/index.html	Third Party Advisory
vultures@jpcert.or.jp	https://wordpress.org/plugins/og-tags/	Product, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://jvn.jp/en/jp/JVN29428319/index.html	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://wordpress.org/plugins/og-tags/	Product, Third Party Advisory

Impacted products

	Vendor	Product	Version
	og_tags_project	og_tags	*

JSON

To clipboard

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          "product": "OG Tags",
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GHSA-W35X-3CC7-37PC

Vulnerability from github – Published: 2022-05-24 19:17 – Updated: 2022-05-24 19:17

Details

Show details on source website

JSON

To clipboard

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  ],
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  },
  "details": "Cross-site request forgery (CSRF) vulnerability in OG Tags versions prior to 2.0.2 allows a remote attacker to hijack the authentication of administrators and unintended operation may be performed via unspecified vectors.",
  "id": "GHSA-w35x-3cc7-37pc",
  "modified": "2022-05-24T19:17:25Z",
  "published": "2022-05-24T19:17:25Z",
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    {
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    },
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    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GSD-2021-20831

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-20831

Aliases

CVE-2021-20831

JSON

To clipboard

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      },
      "lastModifiedDate": "2021-10-19T13:38Z",
      "publishedDate": "2021-10-13T09:15Z"
    }
  }
}

JVNDB-2021-000086

Vulnerability from jvndb - Published: 2021-09-28 06:11 - Updated:2021-09-28 06:11

Severity

4.3 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Summary

WordPress Plugin "OG Tags" vulnerable to cross-site request forgery

Details

WordPress Plugin "OG Tags" provided by Mário Valney contains a cross-site request forgery vulnerability (CWE-352). Ryota Nakazato of Cryptography Laboratory, Department of Information and Communication Engineering, Tokyo Denki University reported and coordinated with the developer to fix this vulnerability. After coordination was completed, this case was reported to IPA, and JPCERT/CC coordinated with the developer for the publication under Information Security Early Warning Partnership.

References

Type

URL

	JVN	http://jvn.jp/en/jp/JVN29428319/index.html
	CVE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20831
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-20831
	Cross-Site Request Forgery(CWE-352)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

Mario Valney

OG Tags

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000086.html",
  "dc:date": "2021-09-28T15:11+09:00",
  "dcterms:issued": "2021-09-28T15:11+09:00",
  "dcterms:modified": "2021-09-28T15:11+09:00",
  "description": "WordPress Plugin \"OG Tags\" provided by M\u0026aacute;rio Valney contains a cross-site request forgery vulnerability (CWE-352).\r\n\r\nRyota Nakazato of Cryptography Laboratory, Department of Information and Communication Engineering, Tokyo Denki University reported and coordinated with the developer to fix this vulnerability.\r\n After coordination was completed, this case was reported to IPA, and JPCERT/CC coordinated with the developer for the publication under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2021/JVNDB-2021-000086.html",
  "sec:cpe": {
    "#text": "cpe:/a:og_tags_project:og_tags",
    "@product": "OG Tags",
    "@vendor": "Mario Valney",
    "@version": "2.2"
  },
  "sec:cvss": [
    {
      "@score": "2.6",
      "@severity": "Low",
      "@type": "Base",
      "@vector": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
      "@version": "2.0"
    },
    {
      "@score": "4.3",
      "@severity": "Medium",
      "@type": "Base",
      "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "@version": "3.0"
    }
  ],
  "sec:identifier": "JVNDB-2021-000086",
  "sec:references": [
    {
      "#text": "http://jvn.jp/en/jp/JVN29428319/index.html",
      "@id": "JVN#29428319",
      "@source": "JVN"
    },
    {
      "#text": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20831",
      "@id": "CVE-2021-20831",
      "@source": "CVE"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2021-20831",
      "@id": "CVE-2021-20831",
      "@source": "NVD"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-352",
      "@title": "Cross-Site Request Forgery(CWE-352)"
    }
  ],
  "title": "WordPress Plugin \"OG Tags\" vulnerable to cross-site request forgery"
}

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.

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.

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Action not permitted

CVE-2021-20831 (GCVE-0-2021-20831)

EUVD-2026-21901

FKIE_CVE-2021-20831

GHSA-W35X-3CC7-37PC

GSD-2021-20831

JVNDB-2021-000086

Tags

Sightings

Nomenclature

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