Vendor
WebAssembly vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in WebAssembly: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-90648, was published on 13 September 2026. Nothing was published in the last eight weeks. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About WebAssembly
WebAssembly (Wasm) is a binary instruction format for a stack-based virtual machine designed as a portable compilation target for programming languages.
WebAssembly technologies
Latest WebAssembly vulnerabilities
- CVE-2026-90648: WebAssembly wabt wasm2c sandbox escape via table fliinfoCVSS 7.5EPSS 0.2%
- CVE-2026-8257: WebAssembly Binaryen reachable assertion in BrOn ParserlowCVSS 3.3EPSS 0.0%
- CVE-2025-15412: A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function…mediumCVSS 5.3EPSS 0.2%
- CVE-2025-15411: A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function…mediumCVSS 5.3EPSS 0.2%
Most severe WebAssembly vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2025-15412: A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function…mediumCVSS 5.3EPSS 0.2%
- CVE-2025-15411: A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function…mediumCVSS 5.3EPSS 0.2%
- CVE-2026-8257: WebAssembly Binaryen reachable assertion in BrOn ParserlowCVSS 3.3EPSS 0.0%
- CVE-2026-90648: WebAssembly wabt wasm2c sandbox escape via table fliinfoCVSS 7.5EPSS 0.2%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 1 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many WebAssembly vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/webassembly)<a href="https://junglewise.ai/threats/vendors/webassembly"><img src="https://junglewise.ai/threats/vendors/webassembly/badge.svg" alt="WebAssembly vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/webassembly.json, and this page as text at https://junglewise.ai/threats/vendors/webassembly.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "WebAssembly vulnerabilities", https://junglewise.ai/threats/vendors/webassembly, 9 November 2026.