How severe is CVE-2026-75949?

CVE-2026-75949 has a CVSS 4.0 base score of 10.0, rated critical severity.

Is CVE-2026-75949 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-75949?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-75949 published?

CVE-2026-75949 was published on 2026-08-19 and last updated on 2026-08-26.

CVE-2026-75949

CVE-2026-75949 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 4.0 base score 10.0)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Published: 2026-08-19
Last modified: 2026-08-26

Description

Joomla Extension - cmsjunkie.com - Arbitrary file upload / deletion (path traversal) in J-BusinessDirectory < 6.2.3 - Upload/remove accepted a client-controlled root (_path_type could point at the component site/admin trees), did not enforce path containment, and used a weak extension check. CSRF token was also missing on upload/remove.

Frequently asked questions

What is CVE-2026-75949?: Joomla Extension - cmsjunkie.com - Arbitrary file upload / deletion (path traversal) in J-BusinessDirectory < 6.2.3 - Upload/remove accepted a client-controlled root (_path_type could point at the component site/admin trees), did not enforce path containment, and used a weak extension check. CSRF token was also missing on upload/remove.
How severe is CVE-2026-75949?: CVE-2026-75949 has a CVSS 4.0 base score of 10.0, rated critical severity.
Is CVE-2026-75949 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-75949?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-75949 published?: CVE-2026-75949 was published on 2026-08-19 and last updated on 2026-08-26.

References

https://www.cmsjunkie.com/

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

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