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CVE-2026-54786

Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fd_renumber function where the file descriptor being renumbered to is not properly closed. Wasmtime's implementation erroneously only updated the table of descriptors for WASIp1 and didn't update the underlying table of descriptors
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:82aa0a3a65a4f32bb6b992b15e7a5769db84c406e0ca94ce4dcca58fabe8026f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-772","description":"CWE-772: Missing Release of Resource after Effective Lifetime","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/problemTypes/0/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"wasmtime","vendor":"bytecodealliance","versions":[{"status":"affected","version":"< 24.0.10"},{"status":"affected","version":">= 25.0.0, < 36.0.11"},{"status":"affected","version":">= 37.0.0, < 44.0.3"},{"status":"affected","version":">= 45.0.0, < 45.0.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2.3,"baseSeverity":"LOW","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-772","description":"CWE-772: Missing Release of Resource after Effective Lifetime","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07a5ad28386ee9bfd7474eabfdc50c9d3da5f58c3038b8a35e029195a60dff83 · sha256:ebc194e7b82c0919… · /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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