CVE Explorer

CVE-2026-47077

Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding. hackney_h3:await_response_loop/6 accumulates the HTTP/3 response body in memory without any size cap. The after Timeout clause is a per-message inactivity timer that resets on every received chunk, housekeeping message, or settings frame — it is not a wall-clock deadline. A malicious HTTP/3 server that emits one small chunk every Timeout - 1 ms with Fin = false and never sends a final frame kee

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:11aff2537d501d8706c714cb83370dfd3e3ba9422ed68056270dff1bb979cf7b

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_h3"],"packageName":"benoitc/hackney","packageURL":"pkg:github/benoitc/hackney","product":"hackney","programFiles":["src/hackney_h3.erl"],"programRoutines":[{"name":"hackney_h3:await_response_loop/6"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"3d25f9fea26c90609de9d64366fedfe5065413bc","status":"affected","version":"0334af206d5099fdf510ed9eda18e34396f065ad","versionType":"git"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["hackney_h3"],"packageName":"hackney","packageURL":"pkg:hex/hackney","product":"hackney","programFiles":["src/hackney_h3.erl"],"programRoutines":[{"name":"hackney_h3:await_response_loop/6"}],"repo":"https://github.com/benoitc/hackney","vendor":"benoitc","versions":[{"lessThan":"4.0.1","status":"affected","version":"2.0.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-47077.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/references/1

{"tags":["patch"],"url":"https://github.com/benoitc/hackney/commit/3d25f9fea26c90609de9d64366fedfe5065413bc"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/references/3

{"tags":["exploit"],"url":"https://github.com/benoitc/hackney/security/advisories/GHSA-jq4m-q6p2-8gwc"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/adp/0/references/0

{"tags":["vendor-advisory","related"],"url":"https://github.com/benoitc/hackney/security/advisories/GHSA-jq4m-q6p2-8gwc"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /containers/cna/references/0

{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-47077"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:ce310a751ab2c3b6954aebbdae7c4b94c81bfb41d5bc59548d57fb69d073a5ce · sha256:3713994ce3e067be… · /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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