CVE-2026-41242
critical · 9.4protobufjs 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.
9.4
CVSS
0.8%
EPSS (exploit prob.)
54th
EPSS percentile
2026-04-18
Published
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
Weaknesses
CWE-94
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| protobufjs_project | protobufjs | < 7.5.5 |
| protobufjs_project | protobufjs | 8.0.0 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/protobufjs/protobuf.js/commit/535df444ac060243722ac5d672db205e5c531d75
- https://github.com/protobufjs/protobuf.js/commit/ff7b2afef8754837cc6dc64c864cd111ab477956
- https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.5
- https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.1
- https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-xq3m-2v4x-88gg
- 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
- https://access.redhat.com/security/cve/CVE-2026-41242
- https://bugzilla.redhat.com/show_bug.cgi?id=2459442
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41242.json
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-41242