Vulnerability · CVE-2016-20023
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
Published Dec 5, 2025 · catalog updated Dec 5, 2025 · CKSource CKFinder
Last checked Nov 3, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2016-20023. EPSS is 0.34%. Act only if a listed version of CKSource CKFinder is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium5.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.34%
- Remediation
- Version ranges on file
- Affected products
- vendor CKSource CKFinder 2 <2.5.0.1
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor CKSource CKFinder 2 <2.5.0.12 <2.5.0.1
How to fix CVE-2016-20023
Upgrade
CVE-2016-20023 lists a fix boundary at 2.5.0.1. Compare the installed build with that boundary before you change production.
Version check
Seen in 2 <2.5.0.1
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2016-20023. EPSS is 0.34%. Act only if a listed version of CKSource CKFinder is installed.
Which versions are affected?
Compare what you have installed with CKSource CKFinder 2 <2.5.0.1 2 <2.5.0.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 5, 2025 · EUVD
Detected
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
Dec 5, 2025 · EUVD
Updated
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
Sources
- CVE.orgVulnerability recordCVE-2016-20023
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2016-20023
30-day exploitation probability 0.34%
first.org - EUVDVulnerability recordEUVD-2016-10801
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 3, 2026
- CVE.orgOct 28, 2026
- EUVDOct 27, 2026