Critical 9.4Published Apr 18, 2026

CVE-2026-41242protobufjs has an arbitrary code execution issue

Updated under an hour ago (Oct 26, 2026, 7:10 PM ET)

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It affects protobufjs protobuf.js and 17 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for protobufjs protobuf.js

Exploited in the last 30 days

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: 9.4 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Sep 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

protobufjs protobuf.js protobufjs:protobuf.js (from the name)	before 7.5.5; from 8.0.0-experimental, < 8.0.1	CNA record
Red Hat Red Hat Developer Hub 1.8 redhat:rhdh	from 1779841586 not affected	CISA ADP
Red Hat Red Hat OpenShift AI 2.25 redhat:openshift_ai	from 1780467029 not affected	CISA ADP
Red Hat Red Hat OpenShift Dev Spaces 3.30 redhat:openshift_devspaces	from 1787762793 not affected	CISA ADP
Red Hat Cryostat 4 redhat:cryostat	4	CISA ADP
Red Hat OpenShift Pipelines redhat:openshift_pipelines	1	CISA ADP
Red Hat OpenShift Service Mesh 3 redhat:service_mesh	3	CISA ADP
Red Hat Red Hat Ansible Automation Platform 2 redhat:ansible_automation_platform	2	CISA ADP
Red Hat Red Hat build of Apicurio Registry 3 redhat:apicurio_registry	3	CISA ADP
Red Hat Red Hat Build of Podman Desktop redhat:podman_desktop	1	CISA ADP
1–10 of 18

References

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gg	x-refsource-confirm, exploit, vendor-advisory
https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75	x-refsource-misc, patch
https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956	x-refsource-misc, patch
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5	x-refsource-misc, product, release-notes
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.1	x-refsource-misc, product, release-notes
https://access.redhat.com/errata/RHSA-2026:21338
https://access.redhat.com/errata/RHSA-2026:24977
https://access.redhat.com/errata/RHSA-2026:26234
https://access.redhat.com/errata/RHSA-2026:37275
https://access.redhat.com/errata/RHSA-2026:62260
1–10 of 13

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.