CVE-2023-5052Network attack vector

Session compromise via reflected phpinfo query

Published May 13, 2024 · Updated Aug 2, 2024

Reflected XSS in Uniform Server Zero 10.2.5 allows remote attackers to run script in an authenticated user's browser via a crafted query. The /us_extra/phpinfo.php handler reflects crafted query input into its response without neutralizing browser-executable markup. The victim must be authenticated and open the attacker-supplied request, after which the script can access or alter session data available to that page.

CVSS severity6.3
Medium
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

Reflected XSS in Uniform Server Zero 10.2.5 allows remote attackers to run script in an authenticated user's browser via a crafted query. The /us_extra/phpinfo.php handler reflects crafted query input into its response without neutralizing browser-executable markup. The victim must be authenticated and open the attacker-supplied request, after which the script can access or alter session data available to that page.

The record

CVE
CVE-2023-5052
Published
May 13, 2024
Updated
Aug 2, 2024
Vendor
The Uniform Server
Product
Uniform Server Zero
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=10.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Uniform Server · Uniform Server Zeroversion=10.2.5

Published CVSS scores

6.3Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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