{"cve":"CVE-2023-30857","nvd":{"published":"2023-04-28T21:15:09.127","modified":"2026-06-17T05:55:47.243","status":"Modified","description":"@aedart/support is the support package for Ion, a monorepo for JavaScript/TypeScript packages. Prior to version `0.6.1`, there is a possible prototype pollution issue for the `MetadataRecord`, when merged with a base class' metadata object, in `meta` decorator from the `@aedart/support` package. The likelihood of exploitation is questionable, given that a class's metadata can only be set or altered when the class is decorated via `meta()`. Furthermore, object(s) of sensitive nature would have to be stored as metadata, before this can lead to a security impact. The issue has been patched in version `0.6.1`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","score":3.7},"cwes":["CWE-1321"],"references":["https://github.com/aedart/ion/commit/c3e2ee08710d4164d796ecb66ed291335dae9291","https://github.com/aedart/ion/security/advisories/GHSA-wwxh-74fx-33c6","https://github.com/aedart/ion/commit/c3e2ee08710d4164d796ecb66ed291335dae9291","https://github.com/aedart/ion/security/advisories/GHSA-wwxh-74fx-33c6"],"products":["aedart:ion"],"source":"nvd","synced_at":"2026-10-19T21:38:05.473481323+00:00"},"epss":{"cve":"CVE-2023-30857","score":0.00482,"percentile":0.41572,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wwxh-74fx-33c6","url":"https://osv.dev/vulnerability/GHSA-wwxh-74fx-33c6","summary":"Possible prototype pollution in metadata record, when using meta decorator","modified":"2026-09-10T03:50:01.748488662Z","packages":[{"ecosystem":"npm","name":"@aedart/support","purl":"pkg:npm/%40aedart/support","ranges":["<0.6.1"],"fixed":["0.6.1"]}]}],"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."]}