Unauthenticated RCE with CVSS 10.0 in a widely used Joomla extension allowing webroot PHP upload; broad site compromise risk across many Joomla sites.
CVE-2026-102427
Unauthenticated RCE via file upload in OrdaSoft Joomla CCK (<8.3.16)
Is CVE-2026-102427 being exploited?
Not confirmed. CVE-2026-102427 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-102427?
CVE-2026-102427 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-102427?
Yes. A fix has been recorded for CVE-2026-102427. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-102427 affect?
CVE-2026-102427 affects OrdaSoft Joomla CCK < 8.3.16, Joomla sites using OrdaSoft CCK extension. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-102427?
Upgrade OrdaSoft CCK to 8.3.16+, disable uploader, restrict webroot writes, apply WAF rule
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote code execution: attacker can upload PHP polyglot to webroot and execute arbitrary code as webserver user, leading to full site compromise.
Immediate action required
- affected1.0.0-8.3.15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.