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CVE-2026-14257

brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count under the limit while making each result progressively longer, so total memory scales with both count and string length until the process hits a fatal, uncatchable out-of-memory error. About 7.5 KB of i
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f658b54cedd2e89a57dd8a3964e717318a3bd053457015e5e0f44cc5cf8862a1
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:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/problemTypes/0/descriptions/0

{"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:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"collectionURL":"https://www.npmjs.com/package/brace-expansion","defaultStatus":"unaffected","packageName":"brace-expansion","platforms":["Linux","macOS","Windows"],"product":"brace-expansion","vendor":"juliangruber","versions":[{"lessThanOrEqual":"5.0.7","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /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:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/metrics/0/cvssV3_1

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:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/problemTypes/0/descriptions/0
{"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:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"url":"https://github.com/juliangruber/brace-expansion"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/references/1
{"url":"https://github.com/juliangruber/brace-expansion/commit/a1bd33999ea75262c4749fff3bbb0d1372bd07b5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /containers/cna/references/2
{"name":"GHSA-mh99-v99m-4gvg","url":"https://www.npmjs.com/package/brace-expansion"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63cb1f6494d247d1ee026057444526d82e2a64c3fb91e9e7367e6629401702d3 · sha256:a336a831a62e04c4… · /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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