trpc up to 11.1.0 WebSocket Server uncaught exception

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in trpc up to 11.1.0. The impacted element is an unknown function of the component WebSocket Server. Executing a manipulation can lead to uncaught exception. This vulnerability is tracked as CVE-2025-43855. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in trpc up to 11.1.0. This vulnerability affects an unknown function of the component WebSocket Server. The manipulation with an unknown input leads to a uncaught exception vulnerability. The CWE definition for the vulnerability is CWE-248. An exception is thrown from a function, but it is not caught. As an impact it is known to affect availability. CVE summarizes:

tRPC allows users to build & consume fully typesafe APIs without schemas or code generation. In versions starting from 11.0.0 to before 11.1.1, an unhandled error is thrown when validating invalid connectionParams which crashes a tRPC WebSocket server. This allows any unauthenticated user to crash a tRPC 11 WebSocket server. Any tRPC 11 server with WebSocket enabled with a createContext method set is vulnerable. This issue has been patched in version 11.1.1.

The advisory is available at github.com. This vulnerability was named CVE-2025-43855 since 04/17/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 11.1.1 eliminates this vulnerability. Applying the patch 9beb26c636d44852e0f407f3d7a82ad54df65b4d 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-12106). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Uncaught exception
CWE: CWE-248
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: trpc 11.1.1
Patch: 9beb26c636d44852e0f407f3d7a82ad54df65b4d

Timelineinfo

04/17/2025 🔍
04/24/2025 +7 days 🔍
04/24/2025 +0 days 🔍
05/15/2025 +21 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-pj3v-9cm8-gvj8
Status: Confirmed

CVE: CVE-2025-43855 (🔍)
GCVE (CVE): GCVE-0-2025-43855
GCVE (VulDB): GCVE-100-306082
EUVD: 🔍

Entryinfo

Created: 04/24/2025 17:25
Updated: 05/15/2025 15:52
Changes: 04/24/2025 17:25 (68), 05/15/2025 15:52 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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