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Medium severity6.5NVD Advisory· Published Aug 22, 2023· Updated Jun 17, 2026

CVE-2020-18378

CVE-2020-18378

Description

A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.

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Affected products

3
  • Webassembly/Binaryen2 versions
    cpe:2.3:a:webassembly:binaryen:1.38.26:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:webassembly:binaryen:1.38.26:*:*:*:*:*:*:*
    • (no CPE)range: <=1.38.26
  • Binaryen/Binaryendescription

Patches

Vulnerability mechanics

References

1

News mentions

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