WebAssembly has 2 CVEs on record. 1 was published in the last 90 days. The median CVSS is 5.2 (medium).
CVEs per month
Last 12 months, by publish date
1025/101125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/09
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 5.2
- Publish → KEV
- —
- Last 90 days
- 1 prev 1
2
Total CVEs
0
Critical
0
CISA KEV
0
Exploited
WebAssembly vulnerabilities
CVEs affecting WebAssembly, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2026-90648High· 7.1PoCwasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack
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() (wa…
▾ MidnightWebAssembly · wabtEPSS 0.15%via NVD
CVE-2026-8257Low· 3.3A vulnerability was detected in WebAssembly Binaryen up to 117
A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable ass…
▾ Sunlitwebassembly · binaryenEPSS 0.16%via NVD