CVE-2026-55668Public exploitNetwork attack vector

Out-of-scope file creation via dangling symlink

Published Jul 8, 2026 · Updated Jul 8, 2026

Path traversal in File Browser before 2.63.16 allows remote authenticated users to create files outside their assigned scope. ScopedFs.within validates the in-scope parent of a dangling symlink after EvalSymlinks returns not-exist, then OpenFile follows that symlink and creates an out-of-scope file. Exploitation requires Create and Modify permissions plus a dangling symlink inside the assigned scope, and it can write only new paths accessible to the service process.

CVSS severity6.3
Medium
EPSS probability0.38%
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 File Browser before 2.63.16 allows remote authenticated users to create files outside their assigned scope. ScopedFs.within validates the in-scope parent of a dangling symlink after EvalSymlinks returns not-exist, then OpenFile follows that symlink and creates an out-of-scope file. Exploitation requires Create and Modify permissions plus a dangling symlink inside the assigned scope, and it can write only new paths accessible to the service process.

The record

CVE
CVE-2026-55668
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
File Browser Contributors
Product
File Browser
Classifications
CWE-59, CWE-22
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2026Record 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=< 2.63.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

File Browser Contributors · File Browserversion=< 2.63.16

Published CVSS scores

6.3GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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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