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Medium · 5.9 CVE-2025-62517 EUVD-2025-35708GHSA-xcg2-9pp4-j82x

Rollbar.js Prototype Pollution Vulnerability in merge()

Published Oct 23, 2025 · Updated Oct 23, 2025 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
rollbar rollbar.js < 2.26.5, >= 3.0.0-alpha1, < 3.0.0-beta5 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm rollbar < 2.26.5 2.26.5 GHSA-xcg2-9pp4-j82x
npm rollbar >= 3.0.0-alpha1, < 3.0.0-beta5 3.0.0-beta5 GHSA-xcg2-9pp4-j82x

References