{"id":"EUVD-2026-22993","revision":null,"records":[{"revision":"e3af4175807b4fdda814e2647e5f5505","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-5758","aliases":[],"title":"Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution","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.","state":0,"publishedAt":"2026-04-15T17:20:13.551+00:00","modifiedAt":"2026-04-15T18:55:45.526+00:00","affected":[{"ecosystem":"Vendor product","name":"Protocol-buffers-schema parser","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Mafintosh\",\n                    \"product\": \"Protocol-buffers-schema parser\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.6.0\",\n                            \"lessThan\": \"3.6.1\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[],"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/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5758","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-5758","identifiers":["CVE-2026-5758"]},"retained":false,"historicalAffected":[]},{"revision":"8c20986b906e40dfaaf240ab587b34fd","observedAt":"2026-10-28T08:17:29.978+00:00","statement":{"source":"euvd","id":"EUVD-2026-22993","aliases":["CVE-2026-5758"],"title":"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.","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 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,"severity":null}],"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/"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-22993","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 15, 2026, 5:20:13 PM","dateUpdated":"Apr 15, 2026, 6:55:45 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-22993","identifiers":["EUVD-2026-22993","CVE-2026-5758"]},"retained":false,"historicalAffected":[]},{"revision":"f0cca20a570a41b69cf71c0782d54b1a","observedAt":"2026-10-27T15:15:28.354+00:00","statement":{"source":"nvd","id":"CVE-2026-5758","aliases":[],"title":"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.","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.","state":0,"publishedAt":"2026-04-15T18:17:24.92+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","score":6.5,"severity":"MEDIUM"}],"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/"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-5758","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":[],"productCriteria":[],"sourceDates":{"published":"2026-04-15T18:17:24.920","lastModified":"2026-10-26T21:10:00.170"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-5758","identifiers":["CVE-2026-5758"]},"retained":false,"historicalAffected":[]},{"revision":"1b58b9493e63436dbd32232f81712881","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-j452-xhg8-qg39","aliases":["CVE-2026-5758"],"title":"Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution","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.","state":0,"publishedAt":"2026-04-15T18:31:58+00:00","modifiedAt":"2026-09-10T03:51:02.1582285+00:00","affected":[{"ecosystem":"npm","name":"protocol-buffers-schema","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.6.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-5758","https://github.com/mafintosh/protocol-buffers-schema/pull/70","https://github.com/mafintosh/protocol-buffers-schema","https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution"],"sourceUrl":"https://github.com/advisories/GHSA-j452-xhg8-qg39","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-j452-xhg8-qg39","identifiers":["GHSA-j452-xhg8-qg39","CVE-2026-5758"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-30T04:49:00.5013535+00:00","complete":true,"records":1764,"lastAttemptAt":"2026-10-30T04:49:00.5013535+00:00","lastSuccessAt":"2026-10-30T04:49:00.6414495+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:49:00.6414504+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-7e2c4e7288f2c464ad8c61f3bb6017374714faedcc781283ac06a706ee1a820b-2e71aeeaba1e737812d17410e1484919534917ed0495906eec4eca846085ee8f","complete":true,"records":416922,"lastAttemptAt":"2026-10-30T04:48:59.4263515+00:00","lastSuccessAt":"2026-10-30T04:48:59.3474102+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:48:59.4263515+00:00","snapshotPublishedAt":"2026-10-30T04:27:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-2897fb2ade7642b5a71112974bcfc1c1","complete":false,"records":13518,"lastAttemptAt":"2026-10-30T05:01:03.5048342+00:00","lastSuccessAt":"2026-10-30T05:01:03.492+00:00","error":"23 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-10-30T05:01:03.492+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13143,"expectedIdentifiers":13601,"failedIdentifiers":23},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-30T04:49:00.5013535+00:00","complete":true,"records":1094,"lastAttemptAt":"2026-10-30T04:49:00.5013535+00:00","lastSuccessAt":"2026-10-30T04:49:00.6424189+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:49:00.6424193+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-dff131a3390246408db17133f034dc7f","complete":true,"records":13541,"lastAttemptAt":"2026-10-30T04:49:01.1833908+00:00","lastSuccessAt":"2026-10-30T03:49:22.155+00:00","error":null,"lastVerifiedAt":"2026-10-30T03:49:22.155+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13601,"expectedIdentifiers":13601,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-ed3d9cf8b8585536fcb9b5cdf9f82e66117dc54e56de651034444f578191d1cf","complete":true,"records":9806,"lastAttemptAt":"2026-10-30T04:49:00.0803085+00:00","lastSuccessAt":"2026-10-30T03:49:17.6553909+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:49:00.0803085+00:00","snapshotPublishedAt":"2026-10-30T03:03:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-10-30T04:48:59.5832538+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:48:59.5832538+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3d73c87158b66efc3d2abd577048eff6d8962b9b8404ac23159c8b20cd3852a7","complete":true,"records":3014,"lastAttemptAt":"2026-10-30T04:49:00.4664018+00:00","lastSuccessAt":"2026-10-30T03:49:20.7978659+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:49:00.4664018+00:00","snapshotPublishedAt":"2026-10-30T03:03:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-ec5b13e78c39945726a720832da7660d2774969f16e2a34f99460c135811abd5","complete":true,"records":230948,"lastAttemptAt":"2026-10-30T04:48:59.9718614+00:00","lastSuccessAt":"2026-10-29T22:50:35.0693267+00:00","error":null,"lastVerifiedAt":"2026-10-30T04:48:59.9718614+00:00","snapshotPublishedAt":"2026-10-29T22:33:13+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}