CVSS: 5.4EPSS: 0%CPEs: 15EXPL: 0CVE-2021-32809 – Arbitrary HTML injection vulnerability in ckeditor
https://notcve.org/view.php?id=CVE-2021-32809
ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/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. The problem has been recognized and patched. • https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD https://www.oracle.com/security-alerts/cpujan2022.html https://www.oracle.com/security-alerts • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-94: Improper Control of Generation of Code ('Code Injection') •
CVSS: 7.6EPSS: 0%CPEs: 20EXPL: 0CVE-2021-32808 – Cross-site scripting in ckeditor via abuse of undo functionality
https://notcve.org/view.php?id=CVE-2021-32808
ckeditor is an open source WYSIWYG HTML editor with rich content support. A vulnerability has been discovered in the clipboard Widget plugin if used alongside the undo feature. The vulnerability allows a user 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. The problem has been recognized and patched. • https://github.com/ckeditor/ckeditor4/releases/tag/4.16.2 https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD https://www.oracle.com/security& • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.1EPSS: 0%CPEs: 8EXPL: 0CVE-2021-33829
https://notcve.org/view.php?id=CVE-2021-33829
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. Una vulnerabilidad de tipo cross-site scripting (XSS) en el Procesador de Datos HTML en CKEditor versiones 4 4.14.0 hasta 4.16.x versiones anteriores a 4.16.1, permite a atacantes remotos inyectar código JavaScript ejecutable mediante un comentario diseñado porque -!> No es manejado apropiadamente • https://ckeditor.com/blog/ckeditor-4.16.1-with-accessibility-enhancements/#improvements-for-comments-in-html-parser https://lists.debian.org/debian-lts-announce/2021/11/msg00007.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.5EPSS: 0%CPEs: 8EXPL: 0CVE-2021-21391 – Regular expression Denial of Service in multiple packages
https://notcve.org/view.php?id=CVE-2021-21391
CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. • https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine https://www.npmjs.com/package/%40ckeditor/ckeditor5-font https://www.npmjs.com/package/%40ckeditor/ckeditor5-image https://www.npmjs.com/package/%40ckeditor/ckeditor5-list https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed https://www.npmjs.com/package/%40ckeditor/ckeditor5-past • CWE-400: Uncontrolled Resource Consumption •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-21254 – Regular expression Denial of Service in Markdown plugin
https://notcve.org/view.php?id=CVE-2021-21254
CKEditor 5 is an open source rich text editor framework with a modular architecture. The CKEditor 5 Markdown plugin (@ckeditor/ckeditor5-markdown-gfm) before version 25.0.0 has a regex denial of service (ReDoS) vulnerability. The vulnerability allowed to abuse link recognition regular expression, which could cause a significant performance drop resulting in browser tab freeze. It affects all users using CKEditor 5 Markdown plugin at version <= 24.0.0. The problem has been recognized and patched. • https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0 https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm • CWE-400: Uncontrolled Resource Consumption •