CVE-2023-40224Network attack vector

Cross-site scripting via unescaped event filter parameters

Published Aug 10, 2023 · Updated Dec 3, 2024

Cross-site scripting in MISP 2.4.174 allows remote attackers to execute script in a user's browser through crafted event-index URL parameters. The Events index template passes URL parameters unescaped into the getPopup action's onClickParams array, allowing attacker-controlled markup to enter the generated page. Exploitation requires a user to open the crafted page; the resulting script can read or modify data available to that MISP browser session.

CVSS severity6.1
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

Cross-site scripting in MISP 2.4.174 allows remote attackers to execute script in a user's browser through crafted event-index URL parameters. The Events index template passes URL parameters unescaped into the getPopup action's onClickParams array, allowing attacker-controlled markup to enter the generated page. Exploitation requires a user to open the crafted page; the resulting script can read or modify data available to that MISP browser session.

The record

CVE
CVE-2023-40224
Published
Aug 10, 2023
Updated
Dec 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 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

6.1NIST NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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