VDB-323473 · CVE-2025-59039 · GHSA-m662-56rj-8fmm

prebid-universal-creative 1.17.3 JavaScript API Prebid.js malicious code

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in prebid-universal-creative 1.17.3 and classified as critical. The impacted element is an unknown function of the file Prebid.js of the component JavaScript API. This manipulation causes malicious code. This vulnerability appears as CVE-2025-59039. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in prebid-universal-creative 1.17.3 and classified as critical. Affected by this vulnerability is an unknown part of the file Prebid.js of the component JavaScript API. The manipulation with an unknown input leads to a malicious code vulnerability. The CWE definition for the vulnerability is CWE-506. The product contains code that appears to be malicious in nature. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Prebid Universal Creative (PUC) is a JavaScript API to render multiple formats. Npm users of PUC 1.17.3 or PUC latest were briefly affected by crypto-related malware. This includes the extremely popular jsdelivr hosting of this file. The maintainers of PUC unpublished version 1.17.3. Users should see Prebid.js 9 release notes for suggestions on moving off the deprecated workflow of using the PUC or pointing to a dynamic version of it. PUC users pointing to latest should transition to 1.17.2 as soon as possible to avoid similar attacks in the future.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-59039 since 09/08/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/11/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-27597). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

prebid-universal-creative

Version

1.17.3

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Malicious code
CWE: CWE-506
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/08/2025 CVE reserved
09/10/2025 +2 days Advisory disclosed
09/10/2025 +0 days VulDB entry created
09/11/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-m662-56rj-8fmm
Status: Confirmed

CVE: CVE-2025-59039 (🔒)
GCVE (CVE): GCVE-0-2025-59039
GCVE (VulDB): GCVE-100-323473
EUVD: 🔒

Entryinfo

Created: 09/10/2025 08:26
Updated: 09/11/2025 06:26
Changes: 09/10/2025 08:26 (65), 09/11/2025 06:26 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.