{"cve":"CVE-2026-5758","nvd":{"published":"2026-04-15T18:17:24.920","modified":"2026-10-26T21:10:00.170","status":"Awaiting Analysis","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","score":6.5},"cwes":[],"references":["https://github.com/mafintosh/protocol-buffers-schema/pull/70","https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/"],"products":[],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-5758","score":0.00534,"percentile":0.44793,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-j452-xhg8-qg39","url":"https://osv.dev/vulnerability/GHSA-j452-xhg8-qg39","summary":"Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution","modified":"2026-09-10T03:51:02.158228495Z","packages":[{"ecosystem":"npm","name":"protocol-buffers-schema","purl":"pkg:npm/protocol-buffers-schema","ranges":["<3.6.1"],"fixed":["3.6.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}