How severe is CVE-2019-15862?

CVE-2019-15862 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-15862 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15862?

CVE-2019-15862 primarily affects Cksource Ckfinder. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15862?

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-2019-15862 published?

CVE-2019-15862 was published on 2019-09-26 and last updated on 2026-06-17.

CVE-2019-15862

CVE-2019-15862 is a high-severity vulnerability in Cksource Ckfinder 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: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Cksource Ckfinder
Published: 2019-09-26
Last modified: 2026-06-17

Description

An issue was discovered in CKFinder through 2.6.2.1. Improper checks of file names allows remote attackers to upload files without any extension (even if the application was configured to accept files only with a defined set of extensions). This affects CKFinder for ASP, CKFinder for ASP.NET, CKFinder for ColdFusion, and CKFinder for PHP.

Frequently asked questions

What is CVE-2019-15862?: An issue was discovered in CKFinder through 2.6.2.1. Improper checks of file names allows remote attackers to upload files without any extension (even if the application was configured to accept files only with a defined set of extensions). This affects CKFinder for ASP, CKFinder for ASP.NET, CKFinder for ColdFusion, and CKFinder for PHP.
How severe is CVE-2019-15862?: CVE-2019-15862 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-15862 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15862?: CVE-2019-15862 primarily affects Cksource Ckfinder. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15862?: 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-2019-15862 published?: CVE-2019-15862 was published on 2019-09-26 and last updated on 2026-06-17.

References

https://ckeditor.com/blog/CKFinder-3.5.1-and-CKFinder-2.6.3-released/

Affected products (4)

cpe:2.3:a:cksource:ckfinder:*:*:*:*:*:asp:*:*
cpe:2.3:a:cksource:ckfinder:*:*:*:*:*:asp.net:*:*
cpe:2.3:a:cksource:ckfinder:*:*:*:*:*:coldfusion:*:*
cpe:2.3:a:cksource:ckfinder:*:*:*:*:*:php:*:*

More vulnerabilities in Cksource Ckfinder

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CVE-2019-15891 — Medium (CVSS 5.3): An issue was discovered in CKFinder through 2.6.2.1 and 3.x through 3.5.0. The documentation has misleading information…
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