CVE-2023-39575Public exploitNetwork attack vector

Pre-auth script execution via hidden-input attribute injection

Published Sep 19, 2023 · Updated Sep 25, 2024

Reflected XSS in ISL ARP Guard 4.0.2 allows remote attackers to run script in a victim's browser through a crafted login URL. The login page inserts the unvalidated url_str value after a hidden input's type attribute, enabling HTML attribute injection. Exploitation requires the victim to open the URL and press an access-key combination; executed script can read the non-HttpOnly S cookie.

CVSS severity5.4
Medium
EPSS probability0.35%
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 ISL ARP Guard 4.0.2 allows remote attackers to run script in a victim's browser through a crafted login URL. The login page inserts the unvalidated url_str value after a hidden input's type attribute, enabling HTML attribute injection. Exploitation requires the victim to open the URL and press an access-key combination; executed script can read the non-HttpOnly S cookie.

The record

CVE
CVE-2023-39575
Published
Sep 19, 2023
Updated
Sep 25, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 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

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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')
T1204.001User Execution: Malicious 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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