VulnSocial

CVE-2026-27204Disclosure(bytecodealliance / wasmtime)

LOWCVSS 6.5 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of WASI host interfaces are susceptible to guest-controlled resource exhaustion on the host. Wasmtime did not appropriately place limits on resource allocations requested by the guests. This serves as a Denial of Service vector. Wasmtime 24.0.6, 36.0.6, 40.0.4, 41.0.4, and 42.0.0 have all been released with the fix for this issue. These versions do not prevent this issue in their default configuration to avoid breaking preexisting behaviors. All versions of Wasmtime have appropriate knobs to prevent this behavior, and Wasmtime 42.0.0-and-later will have these knobs tuned by default to prevent this issue from happening. There are no known workarounds for this issue without upgrading. Embedders are recommended to upgrade and configure their embeddings as necessary to prevent possibly-malicious guests from triggering this issue.

bytecodealliance CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-400CWE-770CWE-774CWE-789

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • wasmtime

Threat summary

  • 3 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 3 classified signals
  • 3 total mentions across 1 day

Affected systems

Vendors
bytecodealliance
Products
wasmtime

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-02-25: 3Technical Details · 2026-02-25: 202-25
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-27204 Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of WASI host interfaces are susceptible… https://www.cve.org/CVERecord?id=CVE-2026-27204 ----- Traducción: CVE-2026-27204 Was… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-27204, noting that Wasmtime’s WASI host interfaces are vulnerable in specific versions and provides a link to the CVE record, but offers no details on exploitation or mitigation.

    0000032
    54 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-27204 Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of WASI host interfaces are susceptible… https://www.cve.org/CVERecord?id=CVE-2026-27204

    Post summary

    The text announces a vulnerability in Wasmtime’s WASI host interfaces affecting several versions, but it provides no details on exploitation, mitigation, or technical specifics.

    00000161
    56.6K followersView on X
  • cvereports@_cvereports
    Disclosure

    CVE-2026-27204: Infinite Appetites: Breaking Wasmtime with CVE-2026-27204 A fundamental architectural oversight in Wasmtime's handling of the WebAssembly System Interface (WASI) and Component Model allowed malicious guests to exhaust host resources. B... https://cvereports.com/reports/CVE-2026-27204

    Post summary

    The report discloses a resource exhaustion flaw in Wasmtime’s WASI and Component Model handling, but does not provide a PoC, exploit, or patch information.

    0000046
    31 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appbytecodealliancewasmtime-rust-

Explore more

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