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CVE-2026-15144

@fastify/rate-limit before 11.2.0 keys rate-limit buckets by the verbatim client IP string returned from request.ip. Because a single IPv6 client can control a large address range (a /64 holds 2^64 distinct addresses) and the same address has multiple valid textual representations, an IPv6 capable client can defeat the rate-limit boundary by rotating addresses or by rewriting the same address in different forms. Applications that use @fastify/rate-limit to protect endpoints such as authenticatio
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aed562ed36502c0bfc8b724f1e6c458ca05ffbfe7484302037e2f4a48db42f5f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-307","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/@fastify/rate-limit","product":"@fastify/rate-limit","vendor":"@fastify/rate-limit","versions":[{"lessThan":"11.2.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"11.2.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-307","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://cna.openjsf.org/security-advisories.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /containers/cna/references/1
{"url":"https://github.com/fastify/fastify-rate-limit/security/advisories/GHSA-grpc-p53c-r64v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:db9d2bafdedd7436902d39aa4d86d1e5874a7aba89f5b4351b6f41eccd68c27d · sha256:5c69479abb75889d… · /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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