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CVE-2026-56669

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:24d3c6beb40faa09133d73ac42c7b6e6f0bccf4dae9965e5032b63921b41b2f7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-407","description":"CWE-407: Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"elysia","vendor":"elysiajs","versions":[{"status":"affected","version":"< 1.4.29"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-407","description":"CWE-407: Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9","tags":["x_refsource_MISC"],"url":"https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/references/2
{"name":"https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329","tags":["x_refsource_MISC"],"url":"https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/references/1
{"name":"https://github.com/elysiajs/elysia/releases/tag/1.4.29","tags":["x_refsource_MISC"],"url":"https://github.com/elysiajs/elysia/releases/tag/1.4.29"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/references/3
{"name":"https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d97da3d8f28e43000b2bc345b82dddd8a9af5d6ce5f2a7db52de813fad16069f · sha256:dfcec976299fa4ce… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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