Is CVE-2026-41242 actively exploited?

CVE-2026-41242 has no public evidence of in-the-wild exploitation as of 2026-04-18.

What is the CVSS score for CVE-2026-41242?

CVE-2026-41242 has a CVSS score of 9.4 (CRITICAL severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2026-41242?

Vendor patch guidance is linked from the references on this page. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-41242.

Which products are affected by CVE-2026-41242?

Affected products for CVE-2026-41242 are listed on this page once vendor data becomes available.

Fix CVE-2026-41242 - CRITICAL Vulnerability

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the "type" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-94 · Code Injection

Metadata

Primary Vendor: UNKNOWN
Published: 4/18/2026
Last Modified: 4/18/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

No affected products information available.

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-41242. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-41242

View on NIST NVD

CVE-2026-41242 vulnerability