CVE-2025-59038Known exploitationNetwork attack vector

Cryptocurrency theft via injected browser payload

Published Sep 9, 2025 · Updated Sep 10, 2025

Embedded malicious code in Prebid.js 10.9.2 allows attackers to redirect browser cryptocurrency transactions via a compromised npm package. The affected npm artifact contains an injected payload that executes in consuming sites and replaces cryptocurrency transaction destinations with an attacker-controlled wallet. Exposure requires a publisher to bundle the affected release and a site visitor to initiate a cryptocurrency transaction, allowing theft of the transferred funds.

CVSS severity8.6
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Embedded malicious code in Prebid.js 10.9.2 allows attackers to redirect browser cryptocurrency transactions via a compromised npm package. The affected npm artifact contains an injected payload that executes in consuming sites and replaces cryptocurrency transaction destinations with an attacker-controlled wallet. Exposure requires a publisher to bundle the affected release and a site visitor to initiate a cryptocurrency transaction, allowing theft of the transferred funds.

The record

CVE
CVE-2025-59038
Published
Sep 9, 2025
Updated
Sep 10, 2025
Vendor
Prebid.org
Product
Prebid.js
Classifications
CWE-506, CAPEC-442, CAPEC-448, CAPEC-636, T1565.002, T1195.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2025Exploitation reportednpm maintainer account takeover and malicious publication
  2. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  3. Sep 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== 10.9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Prebid.org · Prebid.jsversion== 10.9.2

Published CVSS scores

8.6GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-506Embedded Malicious Code
CAPEC-442Infected Software
CAPEC-448Embed Virus into DLL
CAPEC-636Hiding Malicious Data or Code within Files
T1565.002Transmitted Data Manipulation
T1195.002Compromise Software Supply Chain

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.

Reported exploitation

Technologies

Your stack

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Your stack

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