CVE-2026-21625 is a critical unauthenticated arbitrary file upload vulnerability affecting the Easy Discuss component for Joomla, specifically versions prior to 4.0.5. The flaw stems from insufficient validation of user-uploaded files, relying solely on file extensions without proper MIME type checks. This allows attackers to upload malicious files, potentially leading to full system compromise with high impact on confidentiality, integrity, and availability. While the CVSS score is 8.8 (HIGH), indicating a severe risk, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.0, <= 5.0.15CPE matchmatch criteria | cpe:2.3:a:stackideas:easydiscuss:*:*:*:*:*:joomla\!:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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.