CVE-2026-56291
Unauthenticated file upload in Balbooa Forms extension enables full RCE
Is CVE-2026-56291 being exploited?
Yes. CVE-2026-56291 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-56291?
CVE-2026-56291 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-2026-56291?
Not known from our data. No patch reference has been recorded for CVE-2026-56291, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-56291 affect?
CVE-2026-56291 affects Joomla Balbooa Forms extension, Joomla websites using Balbooa Forms. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-56291?
Disable/uninstall Balbooa Forms or block uploads; apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can upload executables and achieve remote code execution, leading to full server/site compromise and data theft.
Immediate action required
- affected1.0-2.4.0
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.