CVE-2023-40618Public exploitNetwork attack vector

Arbitrary JavaScript via unescaped service parameter

Published Sep 20, 2023 · Updated Sep 25, 2024

Reflected XSS in OpenKnowledgeMaps Head Start 4–7 and Visual Project Explorer 1.0 lets remote attackers run JavaScript in a user's browser. The headstart_snapshot.php endpoint reflects the service parameter into generated HTML without neutralizing attacker-controlled markup, so a crafted URL injects script when a user follows it. The attack requires remote delivery of the malicious link and user interaction; impact is browser-session confidentiality and integrity, with no reported service interruption.

CVSS severity6.1
Medium
EPSS probability0.51%
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 OpenKnowledgeMaps Head Start 4–7 and Visual Project Explorer 1.0 lets remote attackers run JavaScript in a user's browser. The headstart_snapshot.php endpoint reflects the service parameter into generated HTML without neutralizing attacker-controlled markup, so a crafted URL injects script when a user follows it. The attack requires remote delivery of the malicious link and user interaction; impact is browser-session confidentiality and integrity, with no reported service interruption.

The record

CVE
CVE-2023-40618
Published
Sep 20, 2023
Updated
Sep 25, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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

6.1NVDCVSS: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.

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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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