GHSA-f45g-68q3-5w8x · Severity: high · Ecosystem: npm — Elysia has a string URL format ReDoS
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.
Conclusion & alert: CVE-2026-30837 is rated Exploit Available (50/100): CVSS High severity, with low exploitation likelihood (EPSS 0.01%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-11 | — | 0.01% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-f45g-68q3-5w8x · Severity: high · Ecosystem: npm — Elysia has a string URL format ReDoS
| URL | Tags |
|---|---|
| https://github.com/EdamAme-x/elysia-poc-redos | Exploit |
| https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x | Mitigation Vendor Advisory |