CVE-2021-23415Public exploitNetwork attack vector

Arbitrary file relocation via unsanitized rename path

Published Jul 28, 2021 · Updated Sep 16, 2024

Path traversal in mguinness elFinder.AspNet before 1.1.1 allows remote attackers to relocate files outside the configured volume. FileSystemDriver.RenameAsync combines a user-controlled name with the parent path and passes the result to File.Move or Directory.Move without first verifying that the resolved path remains under the volume root. An exposed connector endpoint is sufficient; parent-directory segments can move an existing file or directory beyond the application's intended storage boundary.

CVSS severity7.5
High
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in mguinness elFinder.AspNet before 1.1.1 allows remote attackers to relocate files outside the configured volume. FileSystemDriver.RenameAsync combines a user-controlled name with the parent path and passes the result to File.Move or Directory.Move without first verifying that the resolved path remains under the volume root. An exposed connector endpoint is sufficient; parent-directory segments can move an existing file or directory beyond the application's intended storage boundary.

The record

CVE
CVE-2021-23415
Published
Jul 28, 2021
Updated
Sep 16, 2024
Vendor
mguinness
Product
elFinder.AspNet
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

mguinness · elFinder.AspNetversion=unspecified <1.1.1

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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