How severe is CVE-2018-11322?

CVE-2018-11322 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11322 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11322?

CVE-2018-11322 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11322?

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

When was CVE-2018-11322 published?

CVE-2018-11322 was published on 2018-05-22 and last updated on 2026-06-17.

CVE-2018-11322

CVE-2018-11322 is a high-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 6.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Joomla Joomla!
Published: 2018-05-22
Last modified: 2026-06-17

Description

An issue was discovered in Joomla! Core before 3.8.8. Depending on the server configuration, PHAR files might be handled as executable PHP scripts by the webserver.

Frequently asked questions

What is CVE-2018-11322?: An issue was discovered in Joomla! Core before 3.8.8. Depending on the server configuration, PHAR files might be handled as executable PHP scripts by the webserver.
How severe is CVE-2018-11322?: CVE-2018-11322 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11322 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11322?: CVE-2018-11322 affects Joomla Joomla!. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11322?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-11322 published?: CVE-2018-11322 was published on 2018-05-22 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Joomla Joomla!

CVE-2026-48904 — Critical (CVSS 9.8): An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
CVE-2026-48899 — Critical (CVSS 9.8): An improper access check allows privilege escalation through the com_users batch task.
CVE-2026-48898 — Critical (CVSS 9.8): An improper access check allows privilege escalation through the com_users batch task.
CVE-2026-40383 — Critical (CVSS 9.8): An improper validation of user-supplied input leads to a local file inclusion vulnerability.
CVE-2026-35223 — Critical (CVSS 9.8): An improper access check allows unauthorized access to com_config webservice endpoints.

All CVEs affecting Joomla Joomla! →

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

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

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