CVE-2024-50800Public exploitNetwork attack vector

Reflected XSS via unencoded login error parameter

Published Nov 15, 2024 · Updated Nov 15, 2024

Reflected XSS in M2000 Smart4Web before 5.020241004 allows remote attackers to execute script through the login error URL parameter. The /smart4web/ login page inserts the error value from index.jsp into its HTML response without adequate output encoding. A victim must open the crafted URL; the resulting script runs in that user's browser and can display a fake login form, capture entered credentials, or redirect the user.

CVSS severity5.4
Medium
EPSS probability0.43%
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 M2000 Smart4Web before 5.020241004 allows remote attackers to execute script through the login error URL parameter. The /smart4web/ login page inserts the error value from index.jsp into its HTML response without adequate output encoding. A victim must open the crafted URL; the resulting script runs in that user's browser and can display a fake login form, capture entered credentials, or redirect the user.

The record

CVE
CVE-2024-50800
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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?

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

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

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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