CVE-2026-25951Network attack vector

System takeover via nested traversal file upload

Published Feb 9, 2026 · Updated Feb 9, 2026

Path traversal in FUXA before 1.2.11 allows remote authenticated administrators to write files outside restricted directories. The upload handler removes traversal tokens only once, so nested ....// input becomes ../ after sanitization and reaches runtime/scripts. Administrative access is required; a malicious script written there executes when the server reloads it, converting application control into host code execution.

CVSS severity8.6
High
EPSS probability1.26%
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 FUXA before 1.2.11 allows remote authenticated administrators to write files outside restricted directories. The upload handler removes traversal tokens only once, so nested ....// input becomes ../ after sanitization and reaches runtime/scripts. Administrative access is required; a malicious script written there executes when the server reloads it, converting application control into host code execution.

The record

CVE
CVE-2026-25951
Published
Feb 9, 2026
Updated
Feb 9, 2026
Vendor
Frangoteam
Product
FUXA
Classifications
CWE-23, CWE-22, CWE-184, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 9, 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=< 1.2.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Frangoteam · FUXAversion=< 1.2.11

Published CVSS scores

8.6GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-184Incomplete List of Disallowed Inputs
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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