CVE-2023-24657Public exploitNetwork attack vector

Reflected XSS via unencoded closeClass attribute

Published Mar 8, 2023 · Updated Mar 5, 2025

Reflected XSS in phpIPAM 1.6 allows remote attackers to execute script in a user’s browser via the closeClass parameter. The popup template prints the closeClass request value directly into a button class attribute without HTML encoding, allowing markup to escape the attribute. A user must open a crafted popup URL; injected script then runs in that user’s phpIPAM browser context, enabling session-scoped data access or actions.

CVSS severity6.1
Medium
EPSS probability3.90%
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 phpIPAM 1.6 allows remote attackers to execute script in a user’s browser via the closeClass parameter. The popup template prints the closeClass request value directly into a button class attribute without HTML encoding, allowing markup to escape the attribute. A user must open a crafted popup URL; injected script then runs in that user’s phpIPAM browser context, enabling session-scoped data access or actions.

The record

CVE
CVE-2023-24657
Published
Mar 8, 2023
Updated
Mar 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record 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
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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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