{"id":"CVE-2026-115388","aliases":["RUSTSEC-2026-0313","GHSA-c9gc-w9vx-w86p"],"title":"Outgoing HTTP body write allows guest-driven host memory exhaustion","summary":"Outgoing HTTP body write allows guest-driven host memory exhaustion","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"wasmtime-wasi-http","product":"wasmtime-wasi-http","ecosystem":"rust","affected":["wasmtime-wasi-http >= 49.0.0, < 49.0.1"],"patched":["wasmtime-wasi-http 49.0.1"],"published":"2026-09-24","updated":"2026-10-23","sourceUpdated":"2026-10-23T10:55:50.282824395Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0313","references":[{"url":"https://crates.io/crates/wasmtime-wasi-http"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0313.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/14408"},{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p","label":"GitHub Security Advisory (GHSA-c9gc-w9vx-w86p)"},{"url":"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","label":"VulnCheck Advisory: 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"}],"tags":["osv","rust","cve.org"],"cwe":["CWE-400"],"ingestedAt":"2026-10-22T22:00:50.404Z","slug":"CVE-2026-115388","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime-wasi-http >= 49.0.0, < 49.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime-wasi-http 49.0.1`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":34.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}