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CVE-2026-3449

Versions of the package @tootallnate/once before 3.0.1 are vulnerable to Incorrect Control Flow Scoping in promise resolving when AbortSignal option is used. The Promise remains in a permanently pending state after the signal is aborted, causing any await or .then() usage to hang indefinitely. This can cause a control-flow leak that can lead to stalled requests, blocked workers, or degraded application availability.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:98eac85e854d90a38815ab112b6d2424dba35b52e31f7caf3ee23d57ebb186b6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/metrics/0/cvssV3_1

Affected products and versions

1 source assertion
{"product":"@tootallnate/once","vendor":"n/a","versions":[{"lessThan":"3.0.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-705","description":"Incorrect Control Flow Scoping","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/references/2
{"url":"https://github.com/TooTallNate/once/issues/8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /containers/cna/references/1
{"url":"https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efce87390ae83ba02e674c4d24c4bf6136205814836ff35daa6c60fd1faf7d8b · sha256:cf1f5dc1cb92a7b1… · /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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