CVE-2025-4652Public exploitNetwork attack vector

Administrator-context script execution via unescaped next parameter

Published Jun 9, 2025 · Updated Jun 10, 2025

Reflected XSS in Broadstreet before 1.51.8 allows remote attackers to execute script in an administrator's browser via a crafted URL. The partner registration endpoint writes the next query parameter into its response without sanitizing or escaping it. Exploitation requires a high-privilege user to open the link, after which the script runs in the site's origin and can act with that user's browser privileges.

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 Broadstreet before 1.51.8 allows remote attackers to execute script in an administrator's browser via a crafted URL. The partner registration endpoint writes the next query parameter into its response without sanitizing or escaping it. Exploitation requires a high-privilege user to open the link, after which the script runs in the site's origin and can act with that user's browser privileges.

The record

CVE
CVE-2025-4652
Published
Jun 9, 2025
Updated
Jun 10, 2025
Vendor
Broadstreet Ads, Inc.
Product
Broadstreet
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.51.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Broadstreet Ads, Inc. · Broadstreetversion=0 <1.51.8

Published CVSS scores

6.1CISA-ADPCVSS: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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