CVE-2026-115388 | BDVDB-2026-394663 Detail

Description#

wasmtime-wasi-http in Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not enforce the wasi:io/streams check-write allowance for WASIp2 outgoing HTTP bodies, so oversized writes succeed instead of trapping. A malicious guest can pass large buffers to write on outgoing-body resources, holding host allocations for the store's lifetime and exhausting host memory.

Impact#

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References#

Exploit#

History#

1. Version 12026-10-22Record published in the CVE List.
2. Version 22026-10-29Most recent update recorded in the CVE List.