Vulnerability-Lookup

UBUNTU-CVE-2019-16780 (CVE-2019-16780)

Vulnerability from osv_ubuntu – Published: 2019-12-26 17:15 – Updated: 2025-10-24 04:47 – Source website

Details

WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an admin opens the post in the editor. Execution of this attack does require an authenticated user. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release. Automatic updates are enabled by default for minor releases and we strongly recommend that you keep them enabled.

Severity

5.8 (Medium)


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

5.4 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-16780	REPORT
	https://github.com/WordPress/wordpress-develop/se…	REPORT
	https://github.com/WordPress/wordpress-develop/co…	REPORT
	https://hackerone.com/reports/738644	REPORT
	https://wordpress.org/news/2019/12/wordpress-5-3-…	REPORT
	https://wpvulndb.com/vulnerabilities/9976	REPORT
	https://www.cve.org/CVERecord?id=CVE-2019-16780	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "wordpress",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
          },
          {
            "binary_name": "wordpress-l10n",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
          },
          {
            "binary_name": "wordpress-theme-twentyfifteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
          },
          {
            "binary_name": "wordpress-theme-twentyfourteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
          },
          {
            "binary_name": "wordpress-theme-twentysixteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "wordpress",
        "purl": "pkg:deb/ubuntu/wordpress@4.4.2+dfsg-1ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3+dfsg-1",
        "4.3.1+dfsg-1",
        "4.4+dfsg-1",
        "4.4.1+dfsg-1",
        "4.4.2+dfsg-1",
        "4.4.2+dfsg-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "wordpress",
            "binary_version": "4.9.5+dfsg1-1"
          },
          {
            "binary_name": "wordpress-l10n",
            "binary_version": "4.9.5+dfsg1-1"
          },
          {
            "binary_name": "wordpress-theme-twentyfifteen",
            "binary_version": "4.9.5+dfsg1-1"
          },
          {
            "binary_name": "wordpress-theme-twentyseventeen",
            "binary_version": "4.9.5+dfsg1-1"
          },
          {
            "binary_name": "wordpress-theme-twentysixteen",
            "binary_version": "4.9.5+dfsg1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "wordpress",
        "purl": "pkg:deb/ubuntu/wordpress@4.9.5+dfsg1-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.8.2+dfsg-2",
        "4.8.3+dfsg-1",
        "4.9.1+dfsg-1",
        "4.9.2+dfsg-1",
        "4.9.4+dfsg-1",
        "4.9.5+dfsg1-1"
      ]
    }
  ],
  "aliases": [],
  "details": "WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an admin opens the post in the editor. Execution of this attack does require an authenticated user. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release. Automatic updates are enabled by default for minor releases and we strongly recommend that you keep them enabled.",
  "id": "UBUNTU-CVE-2019-16780",
  "modified": "2025-10-24T04:47:53Z",
  "published": "2019-12-26T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-16780"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-x3wp-h3qx-9w94"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/WordPress/wordpress-develop/commit/505dd6a20b6fc3d06130018c1caeff764248c29e"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/738644"
    },
    {
      "type": "REPORT",
      "url": "https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/"
    },
    {
      "type": "REPORT",
      "url": "https://wpvulndb.com/vulnerabilities/9976"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-16780"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-16780"
  ]
}

CVE-2019-16780 (GCVE-0-2019-16780)

Vulnerability from cvelistv5 – Published: 2019-12-26 16:50 – Updated: 2024-08-05 01:24

Title

Stored cross-site scripting (XSS) in WordPress block editor

Summary

Severity

5.8 (Medium)


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

CWE

CWE-79 - Cross-site Scripting (XSS)

Assigner

GitHub_M mitre root

References

8 references

URL	Tags
https://wpvulndb.com/vulnerabilities/9976	x_refsource_MISC
https://github.com/WordPress/wordpress-develop/se…	x_refsource_CONFIRM
https://wordpress.org/news/2019/12/wordpress-5-3-…	x_refsource_MISC
https://github.com/WordPress/wordpress-develop/co…	x_refsource_MISC
https://hackerone.com/reports/738644	x_refsource_MISC
https://seclists.org/bugtraq/2020/Jan/8	mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2020/dsa-4599	vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2020/dsa-4677	vendor-advisoryx_refsource_DEBIAN

Impacted products

1 product

Vendor	Product	Version
WordPress	WordPress	Affected: < 5.3.1 , < 5.3.1 (custom)

Show details on NVD website

JSON

To clipboard

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        ],
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    ],
    "cna": {
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          "vendor": "WordPress",
          "versions": [
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      ],
      "metrics": [
        {
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            "baseScore": 5.8,
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            "confidentialityImpact": "HIGH",
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            "scope": "CHANGED",
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        },
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        },
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          "vendor": {
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                    {
                      "product_name": "WordPress",
                      "version": {
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                          {
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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.