{"id":"CVE-2026-5758","summary":"Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution","details":"JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.","aliases":["GHSA-j452-xhg8-qg39"],"modified":"2026-08-07T11:30:59.942893179Z","published":"2026-04-15T17:20:13.551Z","related":["CGA-p4pf-w66p-x524"],"database_specific":{"cna_assigner":"certcc","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5758.json"},"references":[{"type":"WEB","url":"https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5758.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5758"},{"type":"FIX","url":"https://github.com/mafintosh/protocol-buffers-schema/pull/70"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mafintosh/protocol-buffers-schema","events":[{"introduced":"b901de0774f80ec00f3b07307a2cf5e13526800c"},{"fixed":"46c34bd3199aa1e32374a1af59d02413b9ea197a"}],"database_specific":{"extracted_events":[{"introduced":"3.6.0"},{"fixed":"3.6.1"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5758.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"}]}