CVE-2025-47204Network attack vector

Reflected XSS via unencoded POST debug output

Published May 13, 2025 · Updated May 14, 2025

Reflected XSS in Bootstrap Multiselect before 2.0.0 allows remote attackers to run script in a victim's browser via crafted POST data. The bundled post.php debugging endpoint passes the complete $_POST array to print_r, returning attacker-controlled values without HTML encoding. Exploitation requires an application to deploy that example PHP file unchanged and a victim to submit the attacker's cross-site request; the upstream maintainer describes the repository file as having no impact.

CVSS severity6.1
Medium
EPSS probability0.44%
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 Bootstrap Multiselect before 2.0.0 allows remote attackers to run script in a victim's browser via crafted POST data. The bundled post.php debugging endpoint passes the complete $_POST array to print_r, returning attacker-controlled values without HTML encoding. Exploitation requires an application to deploy that example PHP file unchanged and a victim to submit the attacker's cross-site request; the upstream maintainer describes the repository file as having no impact.

The record

CVE
CVE-2025-47204
Published
May 13, 2025
Updated
May 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CWE-352, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. May 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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')
CWE-352Cross-Site Request Forgery (CSRF)
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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