CVE-2023-40519Public exploitNetwork attack vector

Administrator credential theft via unsanitized disconnectMessage reflection

Published Oct 3, 2023 · Updated Sep 20, 2024

Reflected XSS in Broadpeak Centralized Accounts Management Auth Agent allows remote attackers to run script via disconnectMessage. The bpk-common/auth/login/index.html portal returns disconnectMessage without neutralizing script or HTML in builds 01.01.00.19219575_ee9195b0, 01.01.01.30097902_fd999e76, and 00.12.01.9565588_1254b459. Exploitation requires a user to open a crafted URL; injected script then runs in that user's browser context and exposes session or credential data.

CVSS severity6.1
Medium
EPSS probability0.45%
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 Broadpeak Centralized Accounts Management Auth Agent allows remote attackers to run script via disconnectMessage. The bpk-common/auth/login/index.html portal returns disconnectMessage without neutralizing script or HTML in builds 01.01.00.19219575_ee9195b0, 01.01.01.30097902_fd999e76, and 00.12.01.9565588_1254b459. Exploitation requires a user to open a crafted URL; injected script then runs in that user's browser context and exposes session or credential data.

The record

CVE
CVE-2023-40519
Published
Oct 3, 2023
Updated
Sep 20, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 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 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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