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Vulnerabilities

Vulnerability · CVE-2026-115388

Outgoing HTTP body write allows guest-driven host memory exhaustion

Published Sep 24, 2026 · catalog updated Oct 24, 2026 · Outgoing HTTP body write

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-115388. EPSS is 0.11%. Act only if a listed version of Outgoing HTTP body write is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Outgoing HTTP body write).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.11%
Remediation
Advisory link
Affected products
crates.io wasmtime-wasi-http

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • crates.io wasmtime-wasi-http0.0.0-0 → 36.0.16

How to fix CVE-2026-115388

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-115388. EPSS is 0.11%. Act only if a listed version of Outgoing HTTP body write is installed.

Which versions are affected?

Compare what you have installed with 0.0.0-0 → 36.0.16. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.11%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 24, 2026 · GitHub Advisory Database

    Detected

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory.

  2. Oct 23, 2026 · GitHub Advisory Database

    Fix available

    wasmtime-wasi-http fixed in 36.0.16

  3. Oct 23, 2026 · GitHub Advisory Database

    Fix available

    wasmtime-wasi-http fixed in 36.0.16

  4. Oct 23, 2026 · GitHub Advisory Database

    Updated

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory.

  5. Oct 24, 2026 · GitHub Advisory Database

    Updated

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c9gc-w9vx-w86p For more information see the GitHub-hosted security advisory.

Sources

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • GitHub Advisory DatabaseOct 26, 2026
  • OpenSSF OSV / OSV ScannerOct 26, 2026
  • FIRST EPSSOct 24, 2026
  • CVE.orgOct 23, 2026