Technology · crates.io
deno (crates.io) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 11 vulnerabilities in deno (crates.io): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55517, was published on 23 June 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About deno (crates.io)
Deno is a runtime for JavaScript, TypeScript, and WebAssembly based on the V8 JavaScript engine and the Rust programming language.
Latest deno (crates.io) vulnerabilities
- CVE-2026-55517: Deno denial of service via non-ASCII WebSocket response headersmediumCVSS 4.3
- CVE-2026-49983: Deno environment permission bypass in process.loadEnvFilemediumCVSS 5.2
- CVE-2026-49860: Deno sandbox bypass via missing post-DNS check in WebSocket APImediumCVSS 5.2
- CVE-2026-49859: Deno network restriction bypass in fetch APImediumCVSS 5.2
- CVE-2026-49440: Deno missing cryptographic rounds in node:crypto checkPrimehighCVSS 7.4
- CVE-2026-49411: Deno network permission bypass via numeric hostname aliases in Node.js compatibility layermediumCVSS 6.5
- CVE-2026-49406: Deno path traversal and permission bypass in BYONM module resolutionmediumCVSS 5.5
- CVE-2026-49402: Deno OS command injection in node:child_process on WindowshighCVSS 8.1
- CVE-2026-49401: Deno permission bypass via Unicode normalization mismatch on macOShighCVSS 7.3
- CVE-2026-44726: Deno plaintext data transmission in Node.js TLS compatibility layerhighCVSS 7.4
- CVE-2026-22864: Deno command injection via case-insensitive extension bypass on WindowshighCVSS 8.1EPSS 0.7%
Most severe deno (crates.io) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-22864: Deno command injection via case-insensitive extension bypass on WindowshighCVSS 8.1EPSS 0.7%
- CVE-2026-49402: Deno OS command injection in node:child_process on WindowshighCVSS 8.1
- CVE-2026-49440: Deno missing cryptographic rounds in node:crypto checkPrimehighCVSS 7.4
- CVE-2026-44726: Deno plaintext data transmission in Node.js TLS compatibility layerhighCVSS 7.4
- CVE-2026-49401: Deno permission bypass via Unicode normalization mismatch on macOShighCVSS 7.3
- CVE-2026-49411: Deno network permission bypass via numeric hostname aliases in Node.js compatibility layermediumCVSS 6.5
- CVE-2026-49406: Deno path traversal and permission bypass in BYONM module resolutionmediumCVSS 5.5
- CVE-2026-49983: Deno environment permission bypass in process.loadEnvFilemediumCVSS 5.2
- CVE-2026-49860: Deno sandbox bypass via missing post-DNS check in WebSocket APImediumCVSS 5.2
- CVE-2026-49859: Deno network restriction bypass in fetch APImediumCVSS 5.2
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
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/technologies/deno.json, 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, "deno (crates.io) vulnerabilities", https://junglewise.ai/threats/technologies/deno, 26 September 2026.