Threats Tagged 'cve-2026-47066'
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Threats Tagged 'cve-2026-47066'
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0 Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in benoitc hackney allows Excessive Allocation. The Alt-Svc response header parser in src/hackney_altsvc.erl does not guarantee forward progress. When parse_token/2 receives a non-token, non-whitespace, non-comma byte (e.g. !, @, =, ;), it returns the input unchanged.skip_comma/1 also returns the buffer unchanged when the first byte is not a comma.parse_entries/2 then recurses with identical data, creating a tight infinite tail-recursive loop that pins a scheduler at 100% CPU. The calling process never returns. The entry point parse_and_cache/3 is called synchronously in the connection process on every HTTP response. A single-byte Alt-Svc: ! response header is sufficient to trigger the hang; the header is fully controlled by any HTTP origin the client connects to. This issue affects hackney: from 2.0.0-beta.1 before 4.0.1. Join the discussion | CVE Database V5 | 05/25/2026, 14:00:39 UTC Added: 05/25/2026, 18:58:27 UTC |
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