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CVE-2026-45822

decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:74c9e8a46c4d49b2a3d818d8dee93c569344a73f230804ff674d0e3be9efc85d
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-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-407","description":"CWE-407 Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","platforms":["Linux","macOS","Windows"],"product":"decode-uri-component","vendor":"SamVerschueren","versions":[{"lessThan":"0.5.0","status":"affected","version":"0.1.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"YES","Recovery":"USER","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.6,"baseSeverity":"MEDIUM","exploitMaturity":"UNREPORTED","privilegesRequired":"NONE","providerUrgency":"AMBER","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentiality…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-407","description":"CWE-407 Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"url":"https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/references/0
{"url":"https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/references/1
{"url":"https://www.npmjs.com/package/decode-uri-component"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a7a369545ccc705a7e8d0c893ff1a9bbef8a17090532e996dbafdc00c18dd8ea · sha256:d9f4aa6ac6a68c90… · /containers/cna/references/2

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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