CVE-2026-30837
CWE-1333Published: March 10, 2026· Updated: Mar 11, 2026
Official 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.
Technical Analysis
CVE-2026-30837 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (2)
Quick Facts
Related CVEs (CWE-1333)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-30837 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts