CVE-2026-14863Public exploitNetwork attack vectorHinoki check available

Remote code execution via unescaped thumbnail filenames

Published Aug 11, 2026 · Updated Aug 11, 2026

OS command injection in FileRun 2026.2.0 and earlier allows remote authenticated users to execute code through crafted upload names. Thumbnail extractors embed the uploaded file path inside a double-quoted shell command and pass it to PHP exec(), while the filename filter permits $() substitution. Any account with upload permission can run commands as the web-server user when previews are enabled; a known file-request token also exposes a pre-authentication path.

CVSS severity8.7
High
EPSS probability1.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in FileRun 2026.2.0 and earlier allows remote authenticated users to execute code through crafted upload names. Thumbnail extractors embed the uploaded file path inside a double-quoted shell command and pass it to PHP exec(), while the filename filter permits $() substitution. Any account with upload permission can run commands as the web-server user when previews are enabled; a known file-request token also exposes a pre-authentication path.

The record

CVE
CVE-2026-14863
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
FileRun
Product
FileRun
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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=0 <=2026.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FileRun · FileRunversion=0 <=2026.2.0

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.

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

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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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