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CVE-2025-62517— Rollbar.js Prototype Pollution Vulnerability in merge()

Quick assessment

Affected
rollbar rollbar.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rollbar.js是Rollbar开源的一个从错误跟踪和日志记录库。 Rollbar.js 2.26.5之前版本和3.0.0-alpha1至3.0.0-beta5之前版本存在安全漏洞，该漏洞源于merge函数存在原型污染，可能导致恶意输入污染原型链。

CVSS 5.9 · Medium EPSS 0.39% · P33
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I. Basic Information for CVE-2025-62517

Vulnerability Information
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Vulnerability Title
Rollbar.js Prototype Pollution Vulnerability in merge()
Source: CVE Program / CVE List V5
Vulnerability Description
Rollbar.js offers error tracking and logging from Javascript to Rollbar. In versions before 2.26.5 and from 3.0.0-alpha1 to before 3.0.0-beta5, there is a prototype pollution vulnerability in merge(). If application code calls rollbar.configure() with untrusted input, prototype pollution is possible. This issue has been fixed in versions 2.26.5 and 3.0.0-beta5. A workaround involves ensuring that values passed to rollbar.configure() do not contain untrusted input.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
Rollbar.js 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rollbar.js是Rollbar开源的一个从错误跟踪和日志记录库。 Rollbar.js 2.26.5之前版本和3.0.0-alpha1至3.0.0-beta5之前版本存在安全漏洞，该漏洞源于merge函数存在原型污染，可能导致恶意输入污染原型链。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rollbar rollbar.js < 2.26.5 -

II. Public POCs for CVE-2025-62517

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III. Intelligence Information for CVE-2025-62517

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IV. Related Vulnerabilities

Same vendor: rollbar
Same weakness: CWE-1321