CVE-2026-8438Network attack vector

Unauthenticated stored XSS via unescaped debug logs

Published Jun 6, 2026 · Updated Jun 6, 2026

Stored XSS in TeamUpdraft All-In-One Security 5.4.7 and earlier allows remote attackers to run scripts in an administrator's browser. The get_rest_route() function URL-decodes the REST request path into a debug message, and column_default() returns the stored value without output escaping. Both guest REST blocking and debug logging must be enabled, and execution occurs only when an administrator opens the debug log page.

CVSS severity7.2
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in TeamUpdraft All-In-One Security 5.4.7 and earlier allows remote attackers to run scripts in an administrator's browser. The get_rest_route() function URL-decodes the REST request path into a debug message, and column_default() returns the stored value without output escaping. Both guest REST blocking and debug logging must be enabled, and execution occurs only when an administrator opens the debug log page.

The record

CVE
CVE-2026-8438
Published
Jun 6, 2026
Updated
Jun 6, 2026
Vendor
Internal Link Juicer
Product
All-In-One Security (AIOS)
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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 <=5.4.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Internal Link Juicer · All-In-One Security (AIOS)version=0 <=5.4.7

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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