{"id":"CVE-2026-61814","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-61814","generatedAt":"2026-10-28T01:52:27.455Z","title":"A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser.","description":"Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This issue is fixed in version 1.7.0.","published":"2026-09-23T19:17:33.000Z","lastModified":"2026-09-30T17:32:07.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400","CWE-407"],"affected":[],"epss":{"score":0.0075,"percentile":0.54691,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00567,"percentile":0.44614}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T19:17:33.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-09-23T19:17:32.970Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://github.com/typelevel/jawn/commit/cddcd5e3387c356b05953f7b2af103d309687e4b","source":"security-advisories@github.com"},{"url":"https://github.com/typelevel/jawn/releases/tag/v1.7.0","source":"security-advisories@github.com"},{"url":"https://github.com/typelevel/jawn/security/advisories/GHSA-w4cm-gvhj-cgw6","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-61814","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}