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CVE-2021-23407

23
FAUCET Score

CVE-2021-23407 is a path traversal vulnerability affecting elFinder.Net.Core versions prior to 1.2.4, where insufficient sanitization of user-controlled filenames allows for the creation of arbitrary file system paths. This vulnerability carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low complexity and no user interaction, potentially leading to high impact on confidentiality. While the EPSS score is low, suggesting a low probability of exploitation, there is currently no public exploit code available in Metasploit, Nuclei, or ExploitDB, and it has not been added to CISA's KEV catalog. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.4CPE matchmatch criteria
cpe:2.3:a:elfinder.net.core_project:elfinder.net.core:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.00%
Probability of exploitation in next 30 days
EPSS Percentile
78.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0200 is in the 62nd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
nugetpatch availablevia ghsa
Product: elFinder.Net.CoreFixed in: 1.2.4

Vendor Advisories (1)

nugetGHSA-mvvp-gwgc-5hrphigh

Path Traversal in elFinder.Net.Core

Aug 2, 2021

References

github.com / trannamtrung1st/elFinder.Net.Core/commit/5498c8a86b76ef089cfbd7ef8be014b61fa11c73
PatchThird Party Advisory
github.com / trannamtrung1st/elFinder.Net.Core/releases/tag/all-1.2.4
Third Party Advisory
snyk.io / vuln/SNYK-DOTNET-ELFINDERNETCORE-1315152
ExploitPatchThird Party Advisory