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Vulnerabilities

Vulnerability · RUSTSEC-2026-0375

p3: Guests can set incorrect content-length for spliced response bodies

Published Oct 19, 2026 · catalog updated Oct 20, 2026 · p3: Guests can set

Open the advisory

Exploitation likelihood is not on this record for RUSTSEC-2026-0375. A missing EPSS score is not a low risk. Compare p3: Guests can set with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (p3: Guests can set).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
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-9prg-84vf-g5fc 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-http46.0.0 → 48.0.7

How to fix RUSTSEC-2026-0375

What to do

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

Should you patch?

Exploitation likelihood is not on this record for RUSTSEC-2026-0375. A missing EPSS score is not a low risk. Compare p3: Guests can set with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 46.0.0 → 48.0.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. 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. Oct 19, 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-9prg-84vf-g5fc For more information see the GitHub-hosted security advisory.

  2. Oct 20, 2026 · GitHub Advisory Database

    Fix available

    wasmtime-wasi-http fixed in 48.0.7

  3. Oct 20, 2026 · GitHub Advisory Database

    Fix available

    wasmtime-wasi-http fixed in 48.0.7

  4. Oct 20, 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-9prg-84vf-g5fc For more information see the GitHub-hosted security advisory.

Sources

References

Freshness

Last verified in this catalog Oct 20, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.