protobufjs has an arbitrary code execution issue
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.4epss 0.7%
exploitation probability
0.7%top 49% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
protobufjs · protobuf.jsReferences
https://access.redhat.com/errata/RHSA-2026:21338https://access.redhat.com/errata/RHSA-2026:24977https://access.redhat.com/errata/RHSA-2026:26234https://access.redhat.com/errata/RHSA-2026:37275https://access.redhat.com/security/cve/CVE-2026-41242https://bugzilla.redhat.com/show_bug.cgi?id=2459442https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.1https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gghttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41242.json