Description
A heap-based buffer over-read was discovered in wasm::SExpressionParser::skipWhitespace() in wasm-s-parser.cpp in Binaryen 1.38.22. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm2js.
References (1)
Core 1
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
https://github.com/WebAssembly/binaryen/issues/1863
Scores
CVSS v3
6.5
EPSS
0.0031
EPSS Percentile
54.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (1)
webassembly/binaryen
< 64
Published
Feb 10, 2019
Tracked Since
Feb 18, 2026