CVE-2026-30837
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
4Tags
Description
Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Prior to 1.4.26 , t.String({ format: 'url' }) is vulnerable to ReDoS. Repeating a partial url format (protocol and hostname) multiple times cause regex to slow down significantly. This vulnerability is fixed in 1.4.26.
Analysis
OpenAPI documentation and client-server communication. versions up to 1.4.26 is affected by inefficient regular expression complexity (redos) (CVSS 7.5).
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Remediation
Within 24 hours: Identify and inventory all systems running affected OpenAPI versions up to 1.4.26 and assess exposure to untrusted input. Within 7 days: Implement compensating controls including WAF rules to detect malicious regex patterns, enable request rate limiting, and apply network segmentation to limit exposure. …
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External POC / Exploit Code
Leaving vuln.today
GHSA-f45g-68q3-5w8x