CVE-2023-28439

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered affecting Iframe Dialog and Media Embed packages. The vulnerability may trigger a JavaScript code after fulfilling special conditions: using one of the affected packages on a web page with missing proper Content Security Policy configuration; initializing the editor on an element and using an element other than <textarea> as a base; and destroying the editor instance. This vulnerability might affect a small percentage of integrators that depend on dynamic editor initialization/destroy mechanism.

A fix is available in CKEditor4 version 4.21.0. In some rare cases, a security fix may be considered a breaking change. Starting from version 4.21.0, the Iframe Dialog plugin applies the sandbox attribute by default, which restricts JavaScript code execution in the iframe element. To change this behavior, configure the config.iframe_attributes option. Also starting from version 4.21.0, the Media Embed plugin regenerates the entire content of the embed widget by default. To change this behavior, configure the config.embed_keepOriginalContent option. Those who choose to enable either of the more permissive options or who cannot upgrade to a patched version should properly configure Content Security Policy to avoid any potential security issues that may arise from embedding iframe elements on their web page.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28439.json"
}

References

Affected packages

Git / github.com/ckeditor/ckeditor-releases

Affected ranges

Type: GIT
Repo: https://github.com/ckeditor/ckeditor-releases
Events: Introduced

870a561110a23435d78eda377400dca7f64d3bd3

Fixed

6bf35758a39efddcf8ffaa92e2a6cc1cd6696fbd

Affected versions

4.*

4.0.1/standard

4.0/standard

4.1.1/standard

4.1.2/standard

4.1.3/standard

4.1/standard

4.1rc/standard

4.2.1/standard

4.2.2/standard

4.2.3/standard

4.2/standard

4.3.0/standard

4.3.1/standard

4.3.2/standard

standard/4.*

standard/4.10.0

standard/4.10.1

standard/4.11.0

standard/4.11.1

standard/4.11.2

standard/4.11.3

standard/4.11.4

standard/4.12.0

standard/4.12.1

standard/4.13.0

standard/4.13.1

standard/4.14.0

standard/4.14.1

standard/4.15.0

standard/4.15.1

standard/4.16.0

standard/4.16.1

standard/4.16.2

standard/4.17.0

standard/4.17.1

standard/4.17.2

standard/4.18.0

standard/4.19.0

standard/4.19.1

standard/4.20.0

standard/4.20.1

standard/4.20.2

standard/4.3.3

standard/4.3.4

standard/4.3.5

standard/4.4.0

standard/4.4.1

standard/4.4.2

standard/4.4.3

standard/4.4.4

standard/4.4.5

standard/4.4.6

standard/4.4.7

standard/4.4.8

standard/4.5.0

standard/4.5.1

standard/4.5.10

standard/4.5.11

standard/4.5.2

standard/4.5.3

standard/4.5.4

standard/4.5.5

standard/4.5.6

standard/4.5.7

standard/4.5.8

standard/4.5.9

standard/4.6.0

standard/4.6.1

standard/4.6.2

standard/4.7.0

standard/4.7.1

standard/4.7.2

standard/4.7.3

standard/4.8.0

standard/4.9.0

standard/4.9.1

standard/4.9.2

Git / github.com/ckeditor/ckeditor4

Affected ranges

Type: GIT
Repo: https://github.com/ckeditor/ckeditor4
Events: Introduced

769d96134bcf29f5d3d870e25797ce9b9dc8289e

Fixed

d529d176d70016ce8bcf51eb87ce7802a05fe5f9

Affected versions

4.*

4.0

4.0.0

4.0.1

4.0.1.1

4.0.2

4.0.3

4.1

4.1.0

4.1.1

4.1.2

4.1.3

4.10.0

4.10.1

4.11.0

4.11.1

4.11.2

4.11.3

4.11.4

4.12.0

4.12.1

4.13.0

4.13.1

4.14.0

4.14.1

4.15.0

4.15.1

4.16.0

4.16.1

4.16.2

4.17.0

4.17.1

4.17.2

4.18.0

4.19.0

4.19.1

4.1rc

4.2

4.2.0

4.2.1

4.2.2

4.2.3

4.20.0

4.20.1

4.20.2

4.3.0

4.3.1

4.3.2

4.3.3

4.3.4

4.3.5

4.3beta

4.4.0

4.4.1

4.4.2

4.4.3

4.4.4

4.4.5

4.4.6

4.4.7

4.4.8

4.5.0

4.5.0-beta

4.5.1

4.5.10

4.5.11

4.5.2

4.5.3

4.5.4

4.5.5

4.5.6

4.5.7

4.5.8

4.5.9

4.6.0

4.6.1

4.6.2

4.7.0

4.7.1

4.7.2

4.7.3

4.8.0

4.9.0

4.9.1

4.9.2