CVE-2026-115388

6.2 MEDIUMpublic exploit available

Published 2026-10-22 · Updated 2026-10-22

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-400

Public exploit & PoC references

https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p

All references

https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p
https://www.vulncheck.com/advisories/wasmtime-before-36.0.16-37.0.0-before-48.0.3-and-49.0.0-before-49.0.1-memory-exhaustion-dos-via-wasmtime-wasi-http-outgoing-body-write

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

Related CVEs

HIGHCVE-2025-52290
HIGHCVE-2026-100137
HIGHCVE-2026-100138
HIGHCVE-2026-100139
HIGHCVE-2026-100242PoC
MEDIUMCVE-2026-100350PoC
MEDIUMCVE-2026-100527PoC
LOWCVE-2026-100542PoC

Related by shared AI tags and CWE weakness class. Browse the full archive.