{"id":"PYSEC-2023-236","details":"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.","aliases":["CVE-2023-47163","GHSA-gw7g-qr8w-3448"],"modified":"2026-06-10T17:02:36.562197631Z","published":"2023-11-13T03:15:00Z","references":[{"type":"WEB","url":"https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1"},{"type":"FIX","url":"https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"},{"type":"WEB","url":"https://jvn.jp/en/jp/JVN86156389/"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-gw7g-qr8w-3448"}],"affected":[{"package":{"name":"remarshal","ecosystem":"PyPI","purl":"pkg:pypi/remarshal"},"ranges":[{"type":"GIT","repo":"https://github.com/remarshal-project/remarshal","events":[{"introduced":"0"},{"fixed":"fd6ac799a02f533c3fc243b49cdd6d21aa7ee494"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.17.1"}]}],"versions":["0.10.0","0.11.0","0.11.1","0.11.2","0.12.0","0.14.0","0.15.0","0.15.1","0.16.0","0.16.1","0.17.0","0.8.0","0.9.0","0.9.1","0.9.2","v0.17.0","v0.16.1","v0.16.0","v0.15.1","v0.15.0","v0.14.0","v0.13.0","v0.12.0","v0.11.2","v0.11.1","v0.11.0","v0.10.0","v0.9.2","v0.9.1","v0.9.0","v0.8.0","v0.7.0","v0.6.0","v0.5.1","v0.5.0","v0.4.0","v0.3.0","v0.2.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/remarshal/PYSEC-2023-236.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}