CVE-2026-28343 is a cross-site scripting (XSS) vulnerability affecting CKEditor 5 versions prior to 47.6.0, specifically within its General HTML Support feature. An attacker could exploit this by inserting specially crafted markup, leading to unauthorized JavaScript execution if the editor instance uses an unsafe configuration. Rated as MEDIUM severity (CVSS 6.4), this vulnerability requires low privileges and no user interaction, potentially impacting confidentiality and integrity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 47.6.0CPE matchmatch criteria | cpe:2.3:a:ckeditor:ckeditor5:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.