Description
Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Joomla! Project | Joomla! CMS | 1.0.0-5.4.6, 6.0.0-6.1.2 | — |
| Joomla! Project | Joomla! Framework Filesystem package | 1.0.0-3.3.0, 4.0.0-4.2.0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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fixedbyreboot/CVE-2026-73373-POC ★ 0 · Nov 10, 2026
POC exploit for CVE-2026-73373 - unrestricted upload of shtml files in Joomla core leading to server-side include execution. Blocklist diff plus vulnerable vs fixed controls included.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2026-2926 Joomla: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 18, 2026