CVE-2021-39318 describes a Reflected Cross-Site Scripting (XSS) vulnerability in the H5P CSS Editor WordPress plugin, affecting versions up to and including 1.0. An unauthenticated attacker can exploit this by injecting arbitrary web scripts through the 'h5p-css-file' parameter in 'h5p-css-editor.php'. With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to limited impact on confidentiality and integrity (C:L/I:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.0CPE matchmatch criteria | cpe:2.3:a:h5p-css-editor_project:h5p-css-editor:*:*:*:*:*:wordpress:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.
Remediation records are not available for this CVE.