CVE-2026-54914
- Source
- https://cve.org/CVERecord?id=CVE-2026-54914
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54914.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-54914
- Aliases
-
- GHSA-wj3p-xhqm-pffc
- Published
- 2026-11-05T17:27:16Z
- Modified
- 2026-11-05T21:32:25Z
- Severity
-
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- WebAssembly Micro Runtime: Heap Buffer Overflow in WAMR WASI poll_oneoff Output Buffer
- Details
-
WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to 2.4.5, wasi_poll_oneoff in core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c validates the output pointer for only one wasi_event_t, while wasmtime_ssp_poll_oneoff in core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c can write as many events as the guest-controlled nsubscriptions value. A crafted guest module can provide multiple subscriptions that produce events while positioning an output region large enough for only one event, causing a later out[nevents] write to cross the validated Wasm linear-memory boundary into adjacent host heap memory. The overwrite contains partly attacker-controlled event data and can reliably crash the host process, with further confidentiality or integrity consequences depending on heap layout. This issue is fixed in version 2.4.5.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-122" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54914.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54914.json
- https://github.com/wasm-micro-runtime/wasm-micro-runtime/commit/1f98fb01d09b2ef5e49dc0be2e6006f962fd87f1
- https://github.com/wasm-micro-runtime/wasm-micro-runtime/commit/b49d10eac4176817305d60ea59d24bc69a53eb7b
- https://github.com/wasm-micro-runtime/wasm-micro-runtime/releases/tag/WAMR-2.4.5
- https://github.com/wasm-micro-runtime/wasm-micro-runtime/security/advisories/GHSA-wj3p-xhqm-pffc
- https://nvd.nist.gov/vuln/detail/CVE-2026-54914
Affected packages
Git / github.com/wasm-micro-runtime/wasm-micro-runtime
Affected ranges
- Type
- GIT
- Repo
- https://github.com/wasm-micro-runtime/wasm-micro-runtime
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "2.4.5" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "1f98fb01d09b2ef5e49dc0be2e6006f962fd87f1" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "b49d10eac4176817305d60ea59d24bc69a53eb7b" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "WAMR-2.4.5", "range": [ { "fixed": "25bd7eb63e828e4bd242cc9b38d260b4b31c6605" } ], "source": "REFERENCES_TAG" } ] }