Vulnerability library
Security checkOctober 20, 2025

rollbar vulnerable to prototype pollution

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Low severitynpmrollbar

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

Description

Prototype pollution potential with the utility function rollbar/src/utility.set(). No impact when using the published public interface.

If application code directly imports set from rollbar/src/utility and then calls set with untrusted input in the second argument, it is vulnerable to prototype pollution.

Recommendation

Update the rollbar package to the latest compatible version. Followings are version details:

  • Affected version(s): **>= 3.0.0-alpha1, <= 3.0.0-beta4 <= 2.26.4**
  • Patched version(s): **3.0.0-beta5 2.26.5**

References

Could your website be exposed too?

SmartScanner can check your website for rollbar vulnerable to prototype pollution and gives you actionable findings to investigate.

Start a free scan

Related Issues

See something that needs correcting? Let us knowUpdated October 20, 2025