CVE-2026-90648Published

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc() in wasm_rt_allocate_funcref_table() (wasm2…

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

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CVE-2026-90648 · Microsoft / collected KEV context

cve-program · CVE-2026-90648

https://github.com/trustsig-eu/wasm2c-tableflip
https://github.com/WebAssembly/wabt
https://bugzilla.mozilla.org/show_bug.cgi?id=1827704
https://https//blog.mozilla.org/attack-and-defense/2021/12/06/webassembly-and-back-again-fine-grained-sandboxing-in-firefox-95
https://rlbox.dev/

Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.