Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes
Impact
Wasmtime versions before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 have a sandbox escape vulnerability due to mishandling of symlinks with trailing slashes. A guest with write access to a sandboxed directory can read and write host-accessible files.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
bytecodealliance · VulnCheck
wasmtime
8 ranges
bytecodealliance · VulnCheck
wasmtime
Package identity
pkg:cargo/wasmtimeExplore wasmtime →Identity supplied by VulnCheck. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
0 → before 24.0.13
semver versions
25.0.0 → before 36.0.14
semver versions
37.0.0 → before 46.0.3
semver versions
47.0.0 → before 47.0.4
semver versions
unaffected
24.0.13
semver versions
36.0.14
semver versions
46.0.3
semver versions
47.0.4
semver versions
Other versions: unaffected
Original source description
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtime-wasi because its cap-std dependency mishandles symlinks with trailing slashes on macOS and Linux kernels lacking openat2. A guest with write access to any sandboxed directory can read and write any host-accessible file, and read-only guests may read host files via preexisting symlinks.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-115392View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Environment requirements
These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.
VulnCheck · platform conditions
Any condition may hold
Vulnerable product
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*Before: 24.0.13
Vulnerable product
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*From (inclusive): 25.0.0
Before: 36.0.14
Vulnerable product
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*From (inclusive): 37.0.0
Before: 46.0.3
Vulnerable product
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*From (inclusive): 47.0.0
Before: 47.0.4
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*",
"versionEndExcluding": "24.0.13"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*",
"versionStartIncluding": "25.0.0",
"versionEndExcluding": "36.0.14"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*",
"versionStartIncluding": "37.0.0",
"versionEndExcluding": "46.0.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*",
"versionStartIncluding": "47.0.0",
"versionEndExcluding": "47.0.4"
}
]
}
]
}
]Contributing organizations · 2
Assigning organization
Additional data publisher
What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.