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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 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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a7ece94e925e235e27d6c0dea8c13754871467d6b8fae2780a5173951c22cd4b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 4 assertions

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-774","description":"CWE-774: Allocation of File Descriptors or Handles Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/3/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"wasmtime","vendor":"bytecodealliance","versions":[{"status":"affected","version":"< 24.0.6"},{"status":"affected","version":">= 25.0.0, < 36.0.6"},{"status":"affected","version":">= 37.0.0, < 40.0.4"},{"status":"affected","version":">= 41.0.0, < 41.0.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

4 source assertions
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-774","description":"CWE-774: Allocation of File Descriptors or Handles Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/3/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"name":"https://docs.rs/wasmtime-wasi/latest/wasmtime_wasi/struct.WasiCtxBuilder.html#method.max_random_size","tags":["x_refsource_MISC"],"url":"https://docs.rs/wasmtime-wasi/latest/wasmtime_wasi/struct.WasiCtxBuilder.html#method.max_random_size"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/3
{"name":"https://docs.rs/wasmtime/latest/wasmtime/component/struct.ResourceTable.html#method.set_max_capacity","tags":["x_refsource_MISC"],"url":"https://docs.rs/wasmtime/latest/wasmtime/component/struct.ResourceTable.html#method.set_max_capacity"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/4
{"name":"https://docs.rs/wasmtime/latest/wasmtime/struct.Store.html#method.set_hostcall_fuel","tags":["x_refsource_MISC"],"url":"https://docs.rs/wasmtime/latest/wasmtime/struct.Store.html#method.set_hostcall_fuel"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/5
{"name":"https://docs.wasmtime.dev/security-what-is-considered-a-security-vulnerability.html","tags":["x_refsource_MISC"],"url":"https://docs.wasmtime.dev/security-what-is-considered-a-security-vulnerability.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/6
{"name":"https://github.com/bytecodealliance/wasmtime/issues/11552","tags":["x_refsource_MISC"],"url":"https://github.com/bytecodealliance/wasmtime/issues/11552"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/1
{"name":"https://github.com/bytecodealliance/wasmtime/pull/12599","tags":["x_refsource_MISC"],"url":"https://github.com/bytecodealliance/wasmtime/pull/12599"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/2
{"name":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-852m-cvvp-9p4w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-852m-cvvp-9p4w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7fbff0e06056283e0359d8cac0dbf1cb761eb9c25dafc7f16440de9a640a28 · sha256:29b1a461bd9ca35b… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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