{"id":"CVE-2026-44293","aliases":["GHSA-66ff-xgx4-vchm"],"url":"https://o3.security/vulnerability/CVE-2026-44293","summary":"protobufjs: Code injection through bytes field defaults in generated toObject code","details":"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.","published":"2026-05-13T14:43:33.342Z","modified":"2026-08-07T03:30:46.651193827Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"protobufjs","fixedVersion":"7.5.6"},{"ecosystem":"npm","name":"protobufjs","fixedVersion":"8.0.2"}],"fix":null,"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44293.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26090"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26234"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:29795"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34160"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34374"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37186"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37385"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37628"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44293"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44293.json"},{"type":"ADVISORY","url":"https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-66ff-xgx4-vchm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44293"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477104"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T03:30:46.651193827Z"}}