CVE-2025-62517 MEDIUM

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

Vendor Rollbar
Product rollbar.js
Weakness CWE-1321
Published October 23, 2025
Last update October 23, 2025
View on NVD All CVEs

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 23, 2025 CVE published
October 23, 2025 Record updated