{"id":"CVE-2026-56669","state":"PUBLISHED","title":"Elysia: Inefficient Algorithmic Complexity and Interpretation Conflict","description":"Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.","publishedAt":"2026-07-08T20:25:18.200Z","updatedAt":"2026-07-10T15:02:07.512Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["elysiajs elysia"],"affected":[{"vendor":"elysiajs","product":"elysia","versions":[{"version":"< 1.4.29","status":"affected"}]}],"references":["https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx","https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329","https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9","https://github.com/elysiajs/elysia/releases/tag/1.4.29"],"weaknesses":["CWE-407","CWE-436"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56669.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56669","state":"PUBLISHED","datePublished":"2026-07-08T20:25:18.200Z","dateUpdated":"2026-07-10T15:02:07.512Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-22T16:39:01.043Z"},"containers":{"cna":{"title":"Elysia: Inefficient Algorithmic Complexity and Interpretation Conflict","descriptions":[{"lang":"en","value":"Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29."}],"affected":[{"vendor":"elysiajs","product":"elysia","versions":[{"version":"< 1.4.29","status":"affected"}]}],"references":[{"url":"https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx","name":"https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329","name":"https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329","tags":["x_refsource_MISC"]},{"url":"https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9","name":"https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9","tags":["x_refsource_MISC"]},{"url":"https://github.com/elysiajs/elysia/releases/tag/1.4.29","name":"https://github.com/elysiajs/elysia/releases/tag/1.4.29","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-407","lang":"en","description":"CWE-407: Inefficient Algorithmic Complexity","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-436","lang":"en","description":"CWE-436: Interpretation Conflict","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-08T20:25:18.200Z"},"source":{"advisory":"GHSA-9643-4qgh-g8mx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T15:01:58.719561Z","id":"CVE-2026-56669","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-10T15:02:07.512Z"}}]}}}