CVE-2025-62517
MEDIUMrollbar.js < 2.26.5 and 3.0.0-alpha1-3.0.0-beta5 - Prototype Pollution via merge()
Title source: llmDescription
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.
References (5)
Core 5
Core References
Vendor Advisory x_refsource_confirm
https://github.com/rollbar/rollbar.js/security/advisories/GHSA-xcg2-9pp4-j82x
Issue Tracking x_refsource_misc
https://github.com/rollbar/rollbar.js/pull/1390
Issue Tracking x_refsource_misc
https://github.com/rollbar/rollbar.js/pull/1394
Patch x_refsource_misc
https://github.com/rollbar/rollbar.js/commit/61032fe6c208b71e249514800808a54bcb8cb8bb
Scores
CVSS v3
5.9
EPSS
0.0032
EPSS Percentile
23.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1321
Status
published
Products (3)
npm/rollbar
0 - 2.26.5npm
rollbar/rollbar.js
< 2.26.5
rollbar/rollbar.js
>= 3.0.0-alpha1, < 3.0.0-beta5
Published
Oct 23, 2025
Tracked Since
Feb 18, 2026