CVE-2026-21627

The vulnerability was rooted in how the Tassos Framework plugin handled specific AJAX requests through Joomla’s com_ajax entry point. Under certain conditions, internal framework functionality could be invoked without proper restriction.

CVSS v4.0

9.5 CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

EPSS

1.54% chance of exploitation in the next 30 days, 73th percentile

Published

2026-02-20

Updated

2026-02-23

Proof-of-concept exploits (1)

• yallasec/CVE-2026-21627---Tassos-Novarain-Framework-plg_system_nrframework-Exploit---Joom…0★ · 2026-02-26

References

• CVE Record
• NVD entry

Related

• CVE-2026-2162
• CVE-2026-21628
• CVE-2026-2161
• CVE-2026-2163
• CVE-2026-2160
• CVE-2026-21636