How severe is CVE-2026-56291?

CVE-2026-56291 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-56291 being actively exploited?

Yes. CVE-2026-56291 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-07-10, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2026-56291?

CVE-2026-56291 affects Balbooa Forms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-56291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

When was CVE-2026-56291 published?

CVE-2026-56291 was published on 2026-07-09 and last updated on 2026-07-24.

CVE-2026-56291

CVE-2026-56291 is a critical-severity vulnerability in Balbooa Forms with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-07-10). The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 10.0
EPSS exploit prediction: 15% (97th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-07-10)
Weakness: CWE-434
Affected product: Balbooa Forms
Published: 2026-07-09
Last modified: 2026-07-24

Description

Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension < 2.4.1 - The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Frequently asked questions

What is CVE-2026-56291?: Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension < 2.4.1 - The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
How severe is CVE-2026-56291?: CVE-2026-56291 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-56291 being actively exploited?: Yes. CVE-2026-56291 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-07-10, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2026-56291?: CVE-2026-56291 affects Balbooa Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-56291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
When was CVE-2026-56291 published?: CVE-2026-56291 was published on 2026-07-09 and last updated on 2026-07-24.

References

Affected products (1)

cpe:2.3:a:balbooa:forms:*:*:*:*:*:joomla\!:*:*

More vulnerabilities in Balbooa Forms

CVE-2026-102425 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Unauthenticated RCE via field shortcode injection in Balbooa Forms < 2.4.3.4 - Balbooa…
CVE-2026-101127 — Critical (CVSS 9.4): Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public…
CVE-2026-102424 — High (CVSS 7.5): Joomla Extension - balbooa.com - Unauthenticated path traversal exfiltrates local files through auto-reply attachments…
CVE-2026-101126 — Medium (CVSS 6.5): Joomla Extension - balbooa.com - File meta data tampering in Balbooa Forms < 2.4.3.4 - The final form submission…
CVE-2026-101112 — Medium (CVSS 5.3): Joomla Extension - balbooa.com - Unauthorized Deletion of Attachments in Balbooa Forms < 2.4.3.4 - The public…

All CVEs affecting Balbooa Forms →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-39770 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Doctreat <= 1.7.0 versions.
CVE-2026-32579 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Kognetiks Chatbot for WordPress <= 2.4.9 versions.
CVE-2026-102427 — Critical (CVSS 10.0): Joomla Extension - ordasoft.com - Unauthenticated Remote Code Execution in OrdaSoft Joomla CCK < 8.3.16 -…
CVE-2026-4357 — Critical (CVSS 10.0): The Embed HTML5 Game WordPress plugin through 1.3 does not properly restrict who can upload files via the plugin, as…
CVE-2026-84147 — Critical (CVSS 10.0): This vulnerability exists in the ERP system due to improper authentication controls and inadequate file type validation…
CVE-2026-81780 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →