Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.
Open advisories
15 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.
Affected Packages The issue impacts only editor instances with enabled version notifications. Please note that this feature is disabled by default in all CKEditor 4 LTS versions. Therefore, if you use CKEditor 4 LTS, it is highly unlikely that you are affected by this vulnerability. If you are unsure, please contact us. Impact A theoretical vulnerability has been identified in CKEditor 4.22 (and above). In a highly unlikely scenario where an attacker gains control over the https://cke4.ckeditor.com domain, they could potentially execute an attack on CKEditor 4 instances. Although the vulnerability is purely hypothetical, we have addressed it in CKEditor 4.25.0-lts to ensure compliance with security best practices. Patches The issue has been recognized and patched. The fix is available in version 4.25.0-lts. For More Information If you have any questions or comments about this advisory, please email us at security@cksource.com.
Recommended action: Upgrade to 4.25.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in Code Snippet GeSHi plugin. All integrators that use GeSHi syntax highlighter on the backend side can be affected. Impact A potential vulnerability has been discovered in CKEditor 4 Code Snippet GeSHi plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the GeSHi syntax highlighter library hosted by the victim. The GeSHi library was included as a vendor dependency in CKEditor 4 source files. In a specific scenario, an attacker could craft a malicious script that could be executed by sending a request to the GeSHi library hosted on a PHP web server. Patches The GeSHi library is no longer actively maintained. Due to the lack of ongoing support and updates, potential security vulnerabilities have been identified with its continued use. To mitigate these risks and enhance the overall security of the CKEditor 4, we have decided to completely remove the GeSHi library as a dependency. This change aims to…
Recommended action: Upgrade to 4.25.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the AJAX sample available at the samples/old/ajax.html file location. All integrators that use that sample in the production code can be affected. Impact A potential vulnerability has been discovered in one of CKEditor's 4 samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the AJAX sample. It affects all users using the CKEditor 4 at version < 4.24.0-lts where samples/old/ajax.html is used in a production environment. Patches The problem has been recognized and patched. The fix will be available in version 4.24.0-lts. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Rafael Pedrero and INCIBE (original report) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.24.0-lts (pre-release) or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the samples that use the preview feature: samples/old//.html plugins/[plugin name]/samples//.html All integrators that use these samples in the production code can be affected. Impact A potential vulnerability has been discovered in one of CKEditor's 4 samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the misconfigured preview feature. It affects all users using the CKEditor 4 at version < 4.24.0-lts with affected samples used in a production environment. Patches The problem has been recognized and patched. The fix will be available in version 4.24.0-lts. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Marcin Wyczechowski & Michał Majchrowicz AFINE Team for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.24.0-lts (pre-release) or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the core HTML parsing module and may affect all editor instances that: Enabled full-page editing mode, or enabled CDATA elements in Advanced Content Filtering configuration (defaults to script and style elements). Impact A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. It affects all users using the CKEditor 4 at version < 4.24.0-lts. Patches The problem has been recognized and patched. The fix will be available in version 4.24.0-lts. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Michal Frýba from…
Recommended action: Upgrade to 4.24.0-lts (pre-release) or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
A cross-site scripting (XSS) vulnerability in the Color Dialog plugin for CKEditor 4.15.0 allows remote attackers to run arbitrary web script after persuading a user to copy and paste crafted HTML code into one of editor inputs.
Recommended action: Upgrade to 4.15.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.18.0. Patches The problem has been recognized and patched. The fix will be available in version 4.18.0. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank GHSL team member Kevin Backhouse (@kevinbackhouse) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.18.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed comments HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. Patches The problem has been recognized and patched. The fix will be available in version 4.17.0. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank William Bowling (wbowling) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.17.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 Advanced Content Filter (ACF) core module. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. Patches The problem has been recognized and patched. The fix will be available in version 4.17.0. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Maurice Dauer (laytonctf) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.17.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).
Recommended action: Upgrade to 4.16.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in Fake Objects plugin. All plugins with Fake Objects plugin dependency are affected: Fake Objects Link Flash Iframe Forms Page Break Impact A potential vulnerability has been discovered in CKEditor 4 Fake Objects package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version < 4.16.2. Patches The problem has been recognized and patched. The fix will be available in version 4.16.2. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Mika Kulmala (kulmik) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.16.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in clipboard plugin. All plugins with clipboard plugin dependency are affected: clipboard pastetext pastetools widget uploadwidget autolink tableselection Impact A potential vulnerability has been discovered in CKEditor 4 Clipboard package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version = 4.5.2. Patches The problem has been recognized and patched. The fix will be available in version 4.16.2. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Anton Subbotin (skavans) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.16.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected packages The vulnerability has been discovered in Widget plugin if used alongside Undo feature. Impact A potential vulnerability has been discovered in CKEditor 4 Widget package. The vulnerability allowed to abuse undo functionality using malformed widget HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version = 4.13.0. Patches The problem has been recognized and patched. The fix will be available in version 4.16.2. For more information Email us at security@cksource.com if you have any questions or comments about this advisory. Acknowledgements The CKEditor 4 team would like to thank Anton Subbotin (skavans) for recognizing and reporting this vulnerability.
Recommended action: Upgrade to 4.16.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --! is mishandled.
Recommended action: Upgrade to 4.16.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14.0 allows remote attackers to inject arbitrary web script through a crafted "protected" comment (with the ckeprotected syntax).
Recommended action: Upgrade to 4.14.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.