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CVE and vendor PSIRT advisories from 13 sources, last 30 days. Updated hourly, last run Oct 26 04:05 UTC

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Expand	Severity	Score	Advisory	Title	Source	Flags	Published
	Medium	5.1	CVE-2026-115380	Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASI preview 0 poll_oneoff adapter,... bytecodealliance, Wasmtimebytecodealliance wasmtime, wasmtime-wasi, Wasmtime CLI	NVD		Oct 22 19:17 UTC
CVE-2026-115380Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASI preview 0 poll_oneoff adapter,... Executive summary A flaw in the Wasmtime WebAssembly runtime's WASI preview 0 poll_oneoff adapter lets guest code run long computations that skip fuel limits, enabling denial of service on affected hosts. The advisory rates it Moderate with a CVSS 3.1 base score of 4.0, and the vendor's fix is to upgrade to patched releases (36.0.17, 48.0.4, or 49.0.2) or disable WASI preview 0 in the CLI. Technical summary The weakness is a resource exhaustion issue: the WASI preview 0 poll_oneoff adapter in wasmtime-wasi performs work proportional to the number of subscriptions without consuming fuel or checking whether fuel has run out, because the adapter rewrites each subscription before calling the WASI preview 1 implementation, which is the only path with a fuel check. The attack requires a local guest with no privileges, and the CVSS vector is AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. Affected versions are below 36.0.17, from 37.0.0 before 48.0.4, and from 49.0.0 before 49.0.2; patched versions are 36.0.17, 48.0.4, and 49.0.2. The CLI is affected by default, while library users are affected only if they explicitly enable WASI preview 0. The stated workaround is disabling WASI preview 0 in the CLI with -Spreview0=n. The advisory does not state any detection guidance or evidence of exploitation in the wild. Summaries are generated by AI from the linked advisory text. Confirm versions and fixes at the source. Summarized from github.com/bytecodealliance/wasmtime/se…/GHSA-j366-h8gg-77pm Impact if exploited ConfidentialityNone IntegrityNone AvailabilityLow How it is exploited Attack vector Local Attack complexity Low Attack requirements None Privileges required None User interaction None CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Affects bytecodealliance Wasmtime bytecodealliance wasmtime wasmtime-wasi Wasmtime CLI NIST National Vulnerability DatabasePublished Oct 22, 2026 19:17 UTC Read the advisory

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