Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/edmundhung/conform/commit/f9a1e696ef950efcada5f06ea2b202da505
- https://github.com/edmundhung/conform/releases/tag/v1.19.4
- https://github.com/edmundhung/conform/security/advisories/GHSA-525m-7f82-2mf7
FAQ
What is CVE-2026-49250?
CVE-2026-49250 is a documented vulnerability. 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/formd...
How severe is CVE-2026-49250?
CVSS scoring is not yet available for CVE-2026-49250. Check NVD for updates.
Is there a patch for CVE-2026-49250?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.