CVE-2026-115382 bytecodealliance CVE debrief

Who should care

Defenders responsible for systems using the wasmtime-wasi-http package should assess exposure and prioritize verification and remediation efforts. This includes operators, platform administrators, vulnerability management teams, and security teams. Defenders should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Why it matters

Defenders should prioritize verifying the affected versions of wasmtime-wasi-http and applying patches or workarounds as recommended by the vendor. This vulnerability may impact systems using the wasmtime-wasi-http package, and defenders should assess exposure and prioritize remediation efforts.

• Verify affected versions of wasmtime-wasi-http and apply patches.
• Monitor system logs for potential exploitation attempts.
• Assess exposure and prioritize remediation efforts.

Technical summary

The Wasmtime wasi:http implementation panics when a zero timeout is supplied. This issue is recorded in the RustSec database and affects the wasmtime-wasi-http package. The vulnerability may impact systems using the wasmtime-wasi-http package, and defenders should assess exposure and prioritize remediation efforts. The advisory provides details on the affected versions and recommended patches or workarounds. Defenders should prioritize verifying the affected versions of wasmtime-wasi-http and applying patches or workarounds as recommended by the vendor.

Defensive priority

Defenders should prioritize verifying the affected versions of wasmtime-wasi-http and applying patches or workarounds as recommended by the vendor.

Recommended defensive actions

• Verify the version of wasmtime-wasi-http in use and compare it to the affected versions.
• Apply patches or workarounds as recommended by the vendor.
• Monitor system logs for potential exploitation attempts.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and associated security advisory provide details on the vulnerability. However, the scope of affected versions and systems requires further verification. The RustSec database entry and corresponding CVE entry provide additional context on the vulnerability. Defenders should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.