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VulnerabilityPublished

Wasmtime: Unchecked memory usage

Affects wasmtimeSource GCVE Database

0

Fixed in 50.0.1 : update wasmtime when convenient.

Data as of 30 Oct 2026, 11:16 UTC

Severity
Unrated

Rated by Threat Radar

Patch
Available – fixed in 50.0.1, 49.0.5, 48.0.8 +1

What to do

Upgrade wasmtime to 50.0.1, 49.0.5, 48.0.8 or 36.0.20.

Affected software

ProductAffectedFixed in
crates.iowasmtimepkg:cargo/wasmtimeOther threatsAffected
  • >=0.0.0-0 <36.0.20
  • >=37.0.0 <48.0.8
  • >=49.0.0 <49.0.5
  • >=50.0.0 <50.0.1
Fixed in
  • 36.0.20
  • 48.0.8
  • 49.0.5
  • 50.0.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade to the fixed versions 36.0.20, 48.0.8, 49.0.5, or 50.0.1 to remediate this vulnerability. Since patches are available, applying these updates is the recommended mitigation.

Description

A vulnerability in Wasmtime involves unchecked memory usage when transferring borrowed resources between components. This flaw affects multiple versions prior to fixed releases. The issue could lead to memory safety problems if exploited. Fixed versions are available, and patches have been released.

References

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