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CVE-2026-25547

@isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the No
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:484cdc23c276b6b21ef5372aba937dbb2112f73f2b56f471ca42c4718a778071
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"brace-expansion","vendor":"isaacs","versions":[{"status":"affected","version":"< 5.0.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4c9d39c9d42e87569008331f39aa2801367264c16fbab92b5f8981a9aaf16285 · sha256:14c1b1ee7575d3d3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4c9d39c9d42e87569008331f39aa2801367264c16fbab92b5f8981a9aaf16285 · sha256:14c1b1ee7575d3d3… · /containers/cna/metrics/0/cvssV4_0

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:v2:4c9d39c9d42e87569008331f39aa2801367264c16fbab92b5f8981a9aaf16285 · sha256:14c1b1ee7575d3d3… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4c9d39c9d42e87569008331f39aa2801367264c16fbab92b5f8981a9aaf16285 · sha256:14c1b1ee7575d3d3… · /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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