CVE-2026-44293protobufjs: Code injection through bytes field defaults in generated toObject code
Updated under an hour ago ()
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It affects protobufjs protobuf.js and 13 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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protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript for toObject conversion could include an unsafe expression derived from a schema-controlled bytes field default value. A crafted descriptor with a non-string default value for a bytes field could cause attacker-controlled code to be emitted into the generated conversion function. This vulnerability is fixed in 7.5.6 and 8.0.2.
- CVSS
- 7.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- 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
protobufjs protobuf.js protobufjs:protobuf.js (from the name) | before 7.5.6; from 8.0.0, < 8.0.2 | CNA record |
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 redhat:ansible_automation_platform | from 0:2.6.10-1.el9ap not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:1.1.1-1.el10_2 not affected | CISA ADP |
Red Hat Red Hat Developer Hub 1.9 redhat:rhdh | from 1781187342 not affected | CISA ADP |
Red Hat Red Hat OpenShift AI 3.4 redhat:openshift_ai | from 1787347991 not affected | CISA ADP |
Red Hat Red Hat OpenShift Container Platform 4.18 redhat:openshift | from 1787031447 not affected | CISA ADP |
Red Hat Red Hat OpenShift Service Mesh 3.3 redhat:service_mesh | from 1780997382 not affected | CISA ADP |
Red Hat OpenShift Pipelines redhat:openshift_pipelines | 1 | CISA ADP |
Red Hat Red Hat Build of Podman Desktop redhat:podman_desktop | 1 | CISA ADP |
Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3 redhat:enterprise_linux_ai | 3 | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | 1 | CISA ADP |
Red Hat Red Hat Openshift Data Foundation 4 redhat:openshift_data_foundation | 4 | CISA ADP |
Red Hat Self-service automation portal 2 redhat:ansible_portal | 2 | CISA ADP |
protobufjs_project protobufjs protobufjs_project:protobufjs | before 7.5.6; from 8.0.0 before 8.0.2 | NVD |
References
- https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-66ff-xgx4-vchmx-refsource-confirm, mitigation, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26090
- https://access.redhat.com/errata/RHSA-2026:26234
- https://access.redhat.com/errata/RHSA-2026:29795
- https://access.redhat.com/errata/RHSA-2026:34160
- https://access.redhat.com/errata/RHSA-2026:34374
- https://access.redhat.com/errata/RHSA-2026:37186
- https://access.redhat.com/errata/RHSA-2026:37385
- https://access.redhat.com/errata/RHSA-2026:37628
- https://access.redhat.com/errata/RHSA-2026:54555
- https://access.redhat.com/errata/RHSA-2026:57487
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/security/cve/CVE-2026-44293
- https://bugzilla.redhat.com/show_bug.cgi?id=2477104
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44293.json
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.