{"id":"CVE-2023-28118","aliases":["EUVD-2023-0975","GHSA-c24f-2j3g-rg48"],"status":"published","title":"kaml has potential denial of service while parsing input with anchors and aliases","description":"kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases. There are no known workarounds.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00974,"percentile":0.62492,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-776"],"published":"2023-03-20T12:39:42Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"Maven","package":"com.charleskorn.kaml:kaml","fixed_in":["0.53.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"com.charleskorn.kaml:kaml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.53.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"com.charleskorn.kaml:kaml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.53.0"}]}],"versions":["0.1.0","0.10.0","0.11.0","0.12.0","0.13.0","0.14.0","0.15.0","0.16.1","0.17.0","0.18.0","0.18.1","0.19.0","0.2.1","0.20.0","0.21.0","0.22.0","0.23.0","0.24.0","0.25.0","0.26.0","0.27.0","0.28.0","0.28.1","0.28.2","0.28.3","0.29.0","0.3.0","0.30.0","0.31.0","0.32.0","0.33.0","0.34.0","0.35.0","0.35.1","0.35.2","0.35.3","0.36.0","0.37.0","0.38.0","0.39.0","0.39.1","0.4.0","0.40.0","0.41.0","0.42.0","0.43.0","0.44.0","0.45.0","0.46.0","0.47.0","0.48.0","0.49.0","0.5.0","0.50.0","0.51.0","0.52.0","0.6.0","0.7.0","0.8.0","0.9.0"]}],"products":[{"vendor":"charleskorn","product":"kaml"},{"vendor":"kaml_project","product":"kaml"}],"references":[{"url":"https://github.com/charleskorn/kaml/security/advisories/GHSA-c24f-2j3g-rg48","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/charleskorn/kaml/commit/5f82a2d7e00bfc307afca05d1dc4d7c50593531a","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/charleskorn/kaml/releases/tag/0.53.0","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28118","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-c24f-2j3g-rg48"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28118.json","tags":["advisory"]},{"url":"https://github.com/charleskorn/kaml","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-28118","title":"kaml has potential denial of service while parsing input with anchors and aliases ","description":"kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases. There are no known workarounds.","status":"published","published":"2023-03-20T12:39:42.075Z","modified":"2025-02-25T14:52:56.789Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T14:35:32.752775Z"}],"euvd":[{"id":"EUVD-2023-0975","description":"kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases. There are no known workarounds.","status":"published","published":"2023-03-20T12:39:42Z","modified":"2025-02-25T14:52:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:24.646946Z"}],"ghsa":[{"id":"GHSA-c24f-2j3g-rg48","title":"kaml has potential denial of service while parsing input with anchors and aliases ","description":"### Impact\nApplications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash.\n\n### Patches\nVersion 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases.\n\n### Workarounds\nNone.\n\n### References\nWikipedia has an explanation of this class of vulnerability: [billion laughs attack](https://en.wikipedia.org/wiki/Billion_laughs_attack)\n\n### Acknowledgements\nThank you to @gdude2002 for reporting this issue.","status":"published","published":"2023-03-20T21:26:59Z","modified":"2023-03-20T21:27:00Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T14:36:48.041653Z"}],"nvd":[{"id":"CVE-2023-28118","description":"kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases. There are no known workarounds.","status":"published","published":"2023-03-20T13:15:11.877Z","modified":"2026-06-17T05:46:54.68Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T14:07:49.031498Z"}],"osv":[{"id":"CVE-2023-28118","title":"kaml has potential denial of service while parsing input with anchors and aliases ","description":"kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases. There are no known workarounds.","status":"published","published":"2023-03-20T12:39:42.075Z","modified":"2026-10-28T02:30:49.41956802Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T15:44:31.468318Z"},{"id":"GHSA-c24f-2j3g-rg48","title":"kaml has potential denial of service while parsing input with anchors and aliases ","description":"### Impact\nApplications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash.\n\n### Patches\nVersion 0.53.0 and later default to refusing to parse YAML documents containing anchors and aliases.\n\n### Workarounds\nNone.\n\n### References\nWikipedia has an explanation of this class of vulnerability: [billion laughs attack](https://en.wikipedia.org/wiki/Billion_laughs_attack)\n\n### Acknowledgements\nThank you to @gdude2002 for reporting this issue.","status":"published","published":"2023-03-20T21:26:59Z","modified":"2023-11-08T04:12:09.233283Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T15:46:44.225359Z"}]}}