protobufjs: Text Format string map parsing can mutate returned map object prototype

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-59876 · Microsoft / collected KEV context

EUVD-2026-42311

GHSA-jfj6-75fj-8934

cve-program · CVE-2026-59876

• https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934
• https://github.com/protobufjs/protobuf.js/pull/2335
• https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
• https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5

euvd · EUVD-2026-42311

• https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934
• https://github.com/protobufjs/protobuf.js/pull/2335
• https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
• https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5

nvd · CVE-2026-59876

• https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
• https://github.com/protobufjs/protobuf.js/pull/2335
• https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5
• https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934

osv · GHSA-jfj6-75fj-8934

• https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934
• https://nvd.nist.gov/vuln/detail/CVE-2026-59876
• https://github.com/protobufjs/protobuf.js/pull/2335
• https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
• https://github.com/protobufjs/protobuf.js
• https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5

No related operational record is retained in the current change model.