CVE-2026-53691Network attack vector

Authenticated code execution via unrestricted PHP upload

Published Jun 30, 2026 · Updated Jun 30, 2026

Unrestricted file upload in Redeight CMS 1.0 allows remote authenticated users to execute PHP code through the page-file endpoint. The FileAdd handler accepts attacker-supplied extensions and MIME types, then writes PHP scripts into the web-accessible /uploads/files/ directory. A valid application session is required, and requesting an uploaded script executes it with the web server's privileges.

CVSS severity8.6
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Redeight CMS 1.0 allows remote authenticated users to execute PHP code through the page-file endpoint. The FileAdd handler accepts attacker-supplied extensions and MIME types, then writes PHP scripts into the web-accessible /uploads/files/ directory. A valid application session is required, and requesting an uploaded script executes it with the web server's privileges.

The record

CVE
CVE-2026-53691
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
Redeight
Product
Redeight CMS
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Redeight · Redeight CMSversion=1.0

Published CVSS scores

8.6CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

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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