CVE-2025-62517
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
Rollbar.js before version 2.26.5 and from 3.0.0-alpha1 to before 3.0.0-beta5 has a prototype pollution vulnerability in merge(). If application code calls rollbar.configure() with untrusted input, prototype pollution is possible. This has been fixed in versions 2.26.5 and 3.0.0-beta5.
Risk Assessment
Prototype pollution can allow an attacker to alter application behavior, potentially leading to privilege escalation or arbitrary code execution. The organization risks data integrity and application security.
Recommendation
Update Rollbar.js to version 2.26.5 or 3.0.0-beta5 immediately. As a workaround, ensure that values passed to rollbar.configure() do not contain untrusted input.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

