# Rollbar prototype pollution in utility.set

Source: https://junglewise.ai/threats/rollbar-prototype-pollution-in-utility-set-627ea302  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-09-24. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2025-09-24

Rollbar is an error tracking and debugging service for JavaScript applications. A prototype pollution vulnerability in the utility.set function allows attackers to inject malicious properties into JavaScript objects, potentially causing application crashes or unexpected behavior that could disrupt service availability.

Technologies: [rollbar (npm)](https://junglewise.ai/threats/technologies/rollbar). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 24 September 2025.

**Which products and versions are affected?** rollbar (npm) SEMVER:introduced=0,last_affected=2.26.4.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is This vulnerability attacked?** It is attacked over the network.

**Am I affected?** Check whether you run rollbar (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A prototype pollution vulnerability exists in the utility.set function of Rollbar v2.26.4 and earlier. The vulnerability allows attackers to inject properties on Object.prototype by supplying a crafted payload. The attack requires network access and no authentication or user interaction. Exploitation can lead to denial of service (DoS) and potentially other impacts. This advisory has been withdrawn as a duplicate of GHSA-r8c2-2qwq-94p6; patches or mitigations should be tracked under the primary advisory.

## Affected products

- Rollbar rollbar v2.26.4 and earlier

## Timeline

- 2025-09-24: disclosed: CVE-2025-57325 published
- 2025-10-20: other: Advisory withdrawn as duplicate of GHSA-r8c2-2qwq-94p6

## References

- [https://github.com/rollbar/rollbar.js/issues/1333](https://github.com/rollbar/rollbar.js/issues/1333)

## Related threats

- [Rollbar prototype pollution in merge()](https://junglewise.ai/threats/cve-2025-62517-rollbar-prototype-pollution-in-merge)
- [Rollbar prototype pollution in utility function](https://junglewise.ai/threats/cve-2025-57325-rollbar-prototype-pollution-in-utility-function)