CVE-2026-21628 describes a critical remote code execution vulnerability in the Astroid Template Framework (versions 2.0.0 – 3.3.10) for Joomla, stemming from an improperly secured file management feature that permits unauthenticated users to upload dangerous data types. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, allowing for complete compromise of confidentiality, integrity, and availability. While no official patch is available and no public exploit code exists (Metasploit, Nuclei, ExploitDB), the vulnerability is being discussed in the community, indicating awareness and potential for future exploitation. Organizations using affected versions should restrict uploads and monitor systems closely.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.0.0, <= 3.3.10CPE matchmatch criteria | cpe:2.3:a:templaza:astroid_framework:*:*:*:*:*:joomla\!:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.