Unbounded body accumulation in HTTP/3 response loop in hackney
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| benoitc | hackney | unaffected |
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| benoitc | hackney | unaffected |
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No data.
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| Benoitc | Hackney |
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| Benoitc | Hackney |
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| Benoitc | Hackney |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-76v6-f83q-pxvh | Hackney has an Allocation of Resources Without Limits or Throttling vulnerabilit |
Github GHSA |
GHSA-jq4m-q6p2-8gwc | Hackney: Per-chunk timeout with unbounded body accumulation enables slow-drip OOM |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.703% probability within 30 days)
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cvssV3_1
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ssvc
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| Description | 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 keeps the loop alive indefinitely while the accumulation buffer grows linearly without bound, eventually exhausting the BEAM process heap and causing an out-of-memory condition. This issue affects hackney: from 2.0.0 before 4.0.1. | |
| Title | Unbounded body accumulation in HTTP/3 response loop in hackney | |
| First Time appeared |
Benoitc
Benoitc hackney |
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| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Benoitc
Benoitc hackney |
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| Metrics |
cvssV4_0
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