CVE-2026-49250

Conform, a type-safe form validation library, allows the parsing of nested objects in the form of object.property. From 1.8.0 until 1.19.4, the parseSubmission future API in packages/conform-dom/formdata.ts repeatedly scans FormData or URLSearchParams entries by each unique field name. An unauthenticated attacker can submit a crafted form containing many unique names, causing excessive synchronous CPU work and denial of service in an application that passes the submission to parseSubmission. Applications should continue to enforce request parsing limits before invoking Conform. This issue is fixed in version 1.19.4.

CVSS

No CVSS.

References

Link	Resource
https://github.com/edmundhung/conform/commit/f9a1e696ef950efcada5f06ea2b202da505bf9b0
https://github.com/edmundhung/conform/releases/tag/v1.19.4
https://github.com/edmundhung/conform/security/advisories/GHSA-525m-7f82-2mf7

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-14 18:17

Updated : 2026-09-14 19:17

NVD link : CVE-2026-49250

Mitre link : CVE-2026-49250

CVE.ORG link : CVE-2026-49250

JSON object : View

Products Affected

No product.

CWE

CWE-407

Inefficient Algorithmic Complexity

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