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CVE-2026-30837

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0923524d27fd6efa0d533ef7cedfe6d3626cb68362671d8a1e1ce516f42ac475
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"elysia","vendor":"elysiajs","versions":[{"status":"affected","version":"< 1.4.26"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4fc6fff55cbbc8ceee5857701395aac7a252544f26de04106cb5f37bb615621 · sha256:7aff5ab78f84e53c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d4fc6fff55cbbc8ceee5857701395aac7a252544f26de04106cb5f37bb615621 · sha256:7aff5ab78f84e53c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d4fc6fff55cbbc8ceee5857701395aac7a252544f26de04106cb5f37bb615621 · sha256:7aff5ab78f84e53c… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/EdamAme-x/elysia-poc-redos","tags":["x_refsource_MISC"],"url":"https://github.com/EdamAme-x/elysia-poc-redos"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d4fc6fff55cbbc8ceee5857701395aac7a252544f26de04106cb5f37bb615621 · sha256:7aff5ab78f84e53c… · /containers/cna/references/1
{"name":"https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d4fc6fff55cbbc8ceee5857701395aac7a252544f26de04106cb5f37bb615621 · sha256:7aff5ab78f84e53c… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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