cve.bz

CVE-2026-115386

2.1 lowEPSS 0.2%

Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerability in the WASIp1 fd_readdir implementation that copies uninitialized struct padding into guest memory. Guests with a preopened directory can list entries to receive three bytes of leftover host stack or heap memory per directory entry.

CVSS 4.0
2.1CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
2.6CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)
CWE
CWE-908
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
RUSTSEC-2026-0323crates.iowasmtime-wasi>=0.0.0-0 <36.0.17
>=37.0.0 <48.0.4
>=49.0.0 <49.0.2		36.0.17, 48.0.4, 49.0.2

References

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