How severe is CVE-2017-11364?

CVE-2017-11364 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-11364 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-2017-11364?

CVE-2017-11364 primarily affects Joomla Joomla!. In total, 180 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11364?

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-2017-11364 published?

CVE-2017-11364 was published on 2017-08-02 and last updated on 2026-06-17.

CVE-2017-11364

CVE-2017-11364 is a high-severity vulnerability in Joomla Joomla! with a CVSS 3.x base score of 8.8. 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-295.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Joomla Joomla!
Published: 2017-08-02
Last modified: 2026-06-17

Description

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which allows remote authenticated users to gain control of the target application by leveraging Certificate Transparency logs.

Frequently asked questions

What is CVE-2017-11364?: The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which allows remote authenticated users to gain control of the target application by leveraging Certificate Transparency logs.
How severe is CVE-2017-11364?: CVE-2017-11364 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-11364 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-2017-11364?: CVE-2017-11364 primarily affects Joomla Joomla!. In total, 180 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11364?: 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-2017-11364 published?: CVE-2017-11364 was published on 2017-08-02 and last updated on 2026-06-17.

References

Affected products (180)

cpe:2.3:a:joomla:joomla\!:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.13:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.14:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.5:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.6:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.7:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.8:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.9:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.10:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.11:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.12:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.13:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.14:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.15:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.15:rc:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.16:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.17:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.18:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.19:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.20:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.21:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:1.5.22:*:*:*:*:*:*:*

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