CVE-2024-34400Network attack vector

Cross-site scripting through LinkTitle2 parameter

Published Jun 25, 2024 · Updated Nov 5, 2024

Cross-site scripting in Virto Kanban Board Web Part before 5.3.5.1 allows remote attackers to execute script through LinkTitle2. The public record identifies LinkTitle2 at the KanbanData.ashx endpoint as the injection point but does not disclose how the handler places the value into browser-rendered output. Exploitation requires user interaction and runs script in the affected SharePoint user's browser context, enabling limited access to or modification of content under that origin.

CVSS severity6.1
Medium
EPSS probability0.25%
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 Virto Kanban Board Web Part before 5.3.5.1 allows remote attackers to execute script through LinkTitle2. The public record identifies LinkTitle2 at the KanbanData.ashx endpoint as the injection point but does not disclose how the handler places the value into browser-rendered output. Exploitation requires user interaction and runs script in the affected SharePoint user's browser context, enabling limited access to or modification of content under that origin.

The record

CVE
CVE-2024-34400
Published
Jun 25, 2024
Updated
Nov 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 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

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

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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