CVE-2020-35563Network attack vector

Cross-site scripting via incomplete input filter

Published Feb 16, 2021 · Updated Aug 4, 2024

Cross-site scripting in MB CONNECT LINE mymbCONNECT24 and mbCONNECT24 through 2.6.2 allows remote authenticated users to inject code via crafted input. An incomplete XSS filter fails to neutralize specially crafted malicious input before page rendering, allowing script execution in a victim browser. Exploitation requires a low-privilege account and user interaction; the published impact is limited to low confidentiality and integrity effects without availability loss.

CVSS severity5.4
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in MB CONNECT LINE mymbCONNECT24 and mbCONNECT24 through 2.6.2 allows remote authenticated users to inject code via crafted input. An incomplete XSS filter fails to neutralize specially crafted malicious input before page rendering, allowing script execution in a victim browser. Exploitation requires a low-privilege account and user interaction; the published impact is limited to low confidentiality and integrity effects without availability loss.

The record

CVE
CVE-2020-35563
Published
Feb 16, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5MB CONNECT LINECVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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