rollbar.js up to 2.26.4/3.0.0-beta4 merge prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in rollbar.js up to 2.26.4/3.0.0-beta4. It has been rated as problematic. This issue affects the function merge. This manipulation causes prototype pollution. This vulnerability is tracked as CVE-2025-62517. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in rollbar.js up to 2.26.4/3.0.0-beta4. Affected by this vulnerability is the function merge. The manipulation with an unknown input leads to a prototype pollution vulnerability. The CWE definition for the vulnerability is CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-62517 since 10/15/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading to version 2.26.5 or 3.0.0-beta5 eliminates this vulnerability. Applying the patch 61032fe6c208b71e249514800808a54bcb8cb8bb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: rollbar.js 2.26.5/3.0.0-beta5
Patch: 61032fe6c208b71e249514800808a54bcb8cb8bb

Timelineinfo

10/15/2025 CVE reserved
10/23/2025 +8 days VulDB entry created
10/24/2025 +0 days Advisory disclosed
10/24/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-xcg2-9pp4-j82x
Status: Confirmed

CVE: CVE-2025-62517 (🔒)
GCVE (CVE): GCVE-0-2025-62517
GCVE (VulDB): GCVE-100-329707

Entryinfo

Created: 10/24/2025 00:16
Changes: 10/24/2025 00:16 (66)
Complete: 🔍
Cache ID: 216::103

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