How severe is CVE-2019-15866?

CVE-2019-15866 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-2019-15866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15866?

CVE-2019-15866 affects Crelly Slider Project Crelly Slider. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15866?

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-2019-15866 published?

CVE-2019-15866 was published on 2019-09-03 and last updated on 2026-06-17.

CVE-2019-15866

CVE-2019-15866 is a high-severity vulnerability in Crelly Slider Project Crelly Slider 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Crelly Slider Project Crelly Slider
Published: 2019-09-03
Last modified: 2026-06-17

Description

The crelly-slider plugin before 1.3.5 for WordPress has arbitrary file upload via a PHP file inside a ZIP archive to wp_ajax_crellyslider_importSlider.

Frequently asked questions

What is CVE-2019-15866?: The crelly-slider plugin before 1.3.5 for WordPress has arbitrary file upload via a PHP file inside a ZIP archive to wp_ajax_crellyslider_importSlider.
How severe is CVE-2019-15866?: CVE-2019-15866 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-2019-15866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15866?: CVE-2019-15866 affects Crelly Slider Project Crelly Slider. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15866?: 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-2019-15866 published?: CVE-2019-15866 was published on 2019-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:crelly_slider_project:crelly_slider:*:*:*:*:*:wordpress:*:*

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