rollbar vulnerable to prototype pollution
Impact
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.
POC:
const obj = {};
require("rollbar/src/utility").set(obj, "__proto__.polluted", "vulnerable");
console.log({}.polluted !== undefined ? '[POLLUTION_TRIGGERED]':'');Patches
Fixed in version 2.26.5 and 3.0.0-beta5.
Workarounds
If application code directly imports set from rollbar/src/utility, ensure that the second argument does not receive untrusted input.
References
https://github.com/rollbar/rollbar.js/issues/1333#issuecomment-3353720946
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | rollbar | < 2.26.5, >= 3.0.0-alpha1, < 3.0.0-beta5 | 2.26.5, 3.0.0-beta5 |
References
- https://github.com/rollbar/rollbar.js/security/advisories/GHSA-r8c2-2qwq-94p6
- https://nvd.nist.gov/vuln/detail/CVE-2025-57325
- https://github.com/rollbar/rollbar.js/issues/1333
- https://github.com/rollbar/rollbar.js/commit/d717def8b68f4a947975d0aebb729869cdb2d343
- https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/rollbar%402.26.4/index.js
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57325
- https://github.com/rollbar/rollbar.js
- CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P- Weakness (CWE)
CWE-1321- Platform
- npm
- Package
rollbar- Disclosed
- 20.10.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-r8c2-2qwq-94p6 - CC BY 4.0
Vulnerability history: rollbar
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2025 10.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 1
- Low 1
Disclosures per year
- 2025: 2
- 2026: 0
-
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