{"cve":"CVE-2023-47163","nvd":{"published":"2023-11-13T03:15:09.743","modified":"2026-06-17T06:32:15.880","status":"Modified","description":"Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-674"],"references":["https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494","https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1","https://jvn.jp/en/jp/JVN86156389/","https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494","https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1"],"products":["remarshal_project:remarshal"],"source":"nvd","synced_at":"2026-10-19T21:42:07.670898610+00:00"},"epss":{"cve":"CVE-2023-47163","score":0.0097,"percentile":0.61887,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gw7g-qr8w-3448","url":"https://osv.dev/vulnerability/GHSA-gw7g-qr8w-3448","summary":"Remarshal expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack","modified":"2024-10-26T18:50:36.268136Z","packages":[{"ecosystem":"PyPI","name":"remarshal","purl":"pkg:pypi/remarshal","ranges":["<0.17.1"],"fixed":["0.17.1"]}]},{"id":"PYSEC-2023-236","url":"https://osv.dev/vulnerability/PYSEC-2023-236","summary":"","modified":"2026-06-10T17:02:36.562197631Z","packages":[{"ecosystem":"PyPI","name":"remarshal","purl":"pkg:pypi/remarshal","ranges":["<0.17.1"],"fixed":["0.17.1"]}]}],"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."]}