{"schemaVersion":3,"id":"CVE-2026-5758","aliases":["CGA-2hm9-2cjx-78xj","CGA-6352-fqp8-6rg4","CGA-h262-q8v6-r2fq","CGA-jhmm-7jq6-phg5","GHSA-j452-xhg8-qg39","CGA-3v6j-26qg-pm8c","CGA-42hc-xg73-8rjq","CGA-69cr-rh2p-jhjm","CGA-6jcr-hvhg-46qh","CGA-7qqr-5hrr-rqxg","CGA-8r2r-wf2x-hpfq","CGA-95mr-rv26-qw4f","CGA-cq6w-xg28-wcvq","CGA-f933-6v2h-w8hc","CGA-p7mw-mgrp-cv3r","CGA-p7v7-x88c-6pc9","CGA-qcqm-jp3h-h7mx","CGA-wm27-2m4v-p66p","CGA-wvf3-3274-8gcm"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-04-15T17:20:13.551Z","modified":"2026-04-15T18:55:45.526Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","exploitability":10,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","exploitability":10,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","exploitability":10,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00687,"percentile":0.51802,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.15300000000000002,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00534},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00687,"percentile":0.51802}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00534,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00687,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00687,"percentile":0.51802}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"chainguard","product":"kibana-7","name":"kibana-7","label":"kibana-7","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/kibana-7","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"opensearch-dashboards-2-dashboards-maps","name":"opensearch-dashboards-2-dashboards-maps","label":"opensearch-dashboards-2-dashboards-maps","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/opensearch-dashboards-2-dashboards-maps","purlType":"apk","versions":[{"text":"< 2.19.5-r10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.19.5-r10","eol":null,"hubHref":null},{"vendor":"chainguard","product":"opensearch-dashboards-2-fips-dashboards-maps","name":"opensearch-dashboards-2-fips-dashboards-maps","label":"opensearch-dashboards-2-fips-dashboards-maps","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/opensearch-dashboards-2-fips-dashboards-maps","purlType":"apk","versions":[{"text":"< 2.19.5-r10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.19.5-r10","eol":null,"hubHref":null},{"vendor":"chainguard","product":"opensearch-dashboards-3-dashboards-maps","name":"opensearch-dashboards-3-dashboards-maps","label":"opensearch-dashboards-3-dashboards-maps","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/opensearch-dashboards-3-dashboards-maps","purlType":"apk","versions":[{"text":"< 3.6.0-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.0-r2","eol":null,"hubHref":null},{"vendor":"chainguard","product":"opensearch-dashboards-3-fips-dashboards-maps","name":"opensearch-dashboards-3-fips-dashboards-maps","label":"opensearch-dashboards-3-fips-dashboards-maps","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/opensearch-dashboards-3-fips-dashboards-maps","purlType":"apk","versions":[{"text":"< 3.6.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.0-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"tileserver-gl","name":"tileserver-gl","label":"tileserver-gl","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/tileserver-gl","purlType":"apk","versions":[{"text":"< 5.6.0-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.6.0-r1","eol":null,"hubHref":null},{"vendor":"chainguard","product":"tileserver-gl-fips","name":"tileserver-gl-fips","label":"tileserver-gl-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/tileserver-gl-fips","purlType":"apk","versions":[{"text":"< 5.6.0-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.6.0-r1","eol":null,"hubHref":null},{"vendor":"chainguard","product":"wazuh-dashboard-dashboards-maps","name":"wazuh-dashboard-dashboards-maps","label":"wazuh-dashboard-dashboards-maps","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/wazuh-dashboard-dashboards-maps","purlType":"apk","versions":[{"text":"< 4.14.4-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.14.4-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"wazuh-dashboard-dashboards-maps-fips","name":"wazuh-dashboard-dashboards-maps-fips","label":"wazuh-dashboard-dashboards-maps-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/wazuh-dashboard-dashboards-maps-fips","purlType":"apk","versions":[{"text":"< 4.14.4-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.14.4-r2","eol":null,"hubHref":null},{"vendor":"wolfi","product":"opensearch-dashboards-3-dashboards-maps","name":"opensearch-dashboards-3-dashboards-maps","label":"opensearch-dashboards-3-dashboards-maps","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/opensearch-dashboards-3-dashboards-maps","purlType":"apk","versions":[{"text":"< 3.6.0-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.0-r2","eol":null,"hubHref":null},{"vendor":"wolfi","product":"tileserver-gl","name":"tileserver-gl","label":"tileserver-gl","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/tileserver-gl","purlType":"apk","versions":[{"text":"< 5.6.0-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.6.0-r1","eol":null,"hubHref":null},{"vendor":"mafintosh","product":"protocol-buffers-schema parser","name":"Protocol-buffers-schema parser","label":"protocol-buffers-schema parser","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 3.6.0, < 3.6.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 3.6.0, < 3.6.1","eol":null,"hubHref":"/vendor/mafintosh/protocol-buffers-schema_parser"},{"vendor":"Npm","product":"protocol-buffers-schema","name":"protocol-buffers-schema","label":"protocol-buffers-schema","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/protocol-buffers-schema","purlType":"npm","versions":[{"text":"< 3.6.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.1","eol":null,"hubHref":null}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/mafintosh/protocol-buffers-schema/pull/70","label":"github.com/mafintosh/protocol-buffers-schema/pull/70","hostname":"github.com","tags":["FIX","WEB"]},{"url":"https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/","label":"morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/","hostname":"morielharush.github.io","tags":["WEB"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5758.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5758.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5758","label":"nvd.nist.gov/vuln/detail/CVE-2026-5758","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/mafintosh/protocol-buffers-schema","label":"github.com/mafintosh/protocol-buffers-schema","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution","label":"morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution","hostname":"morielharush.github.io","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CGA-P4PF-W66P-X524"]},"timeline":[{"kind":"published","date":"2026-04-15T17:20:13.551Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-15T18:55:45.526Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T10:34:26.306Z","stale":false,"partial":false}}