CVE-2023-5378Network attack vector

Site takeover via stored administration-panel script

Published Jan 29, 2024 · Updated Jun 17, 2025

Stored XSS in Jan Syski SmodBIP all versions and MegaBIP through 4.36.2 allows remote attackers to run script in an administrator browser. The administration panel accepts and stores script-bearing input from unregistered visitors, then renders it without safe neutralization to an administrator. Knowledge of the panel address and administrator interaction are required; executed script can create an administrative account and compromise the site.

CVSS severity8.8
High
EPSS probability0.53%
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 Jan Syski SmodBIP all versions and MegaBIP through 4.36.2 allows remote attackers to run script in an administrator browser. The administration panel accepts and stores script-bearing input from unregistered visitors, then renders it without safe neutralization to an administrator. Knowledge of the panel address and administrator interaction are required; executed script can create an administrative account and compromise the site.

The record

CVE
CVE-2023-5378
Published
Jan 29, 2024
Updated
Jun 17, 2025
Vendor
Jan Syski
Product
SmodBIP
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jan Syski · SmodBIPversion=0 <*
Jan Syski · MegaBIPversion=0 <=4.36.2

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
8.8CERT.PLCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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