Technology · crates.io
deno (crates.io) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 39 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 4.3EPSS 0.3%
- CVE-2026-49983: Deno environment permission bypass in process.loadEnvFilemediumCVSS 5.2EPSS 0.1%
- CVE-2026-49860: Deno sandbox bypass via missing post-DNS check in WebSocket APImediumCVSS 5.2EPSS 0.1%
- CVE-2026-49859: Deno network restriction bypass in fetch APImediumCVSS 5.2EPSS 0.1%
- CVE-2026-49440: Deno missing cryptographic rounds in node:crypto checkPrimehighCVSS 7.4EPSS 0.2%
- 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 5.5EPSS 0.2%
- CVE-2026-49402: Deno OS command injection in node:child_process on WindowshighCVSS 8.1EPSS 0.4%
- CVE-2026-49401: Deno permission bypass via Unicode normalization mismatch on macOShighCVSS 7.3EPSS 0.2%
- CVE-2026-44726: Deno cleartext transmission in Node.js TLS compatibility layerhighCVSS 7.4EPSS 0.2%
- CVE-2026-32260: Deno vulnerable to command Injection via incomplete shell metacharacter blocklist in node:child_processlowCVSS 3.1EPSS 2.0%
- CVE-2026-27190: Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_processlowCVSS 3.1EPSS 3.2%
- CVE-2026-22864: Deno command injection via case-insensitive extension bypass on WindowshighCVSS 8.1EPSS 0.7%
- CVE-2026-22863: Deno node:crypto doesn't finalize ciphermediumCVSS 4EPSS 0.2%
- CVE-2025-61787: Deno is Vulnerable to Command Injection on Windows During Batch File ExecutionlowCVSS 3.1EPSS 2.1%
- CVE-2025-61786: Deno's --deny-read check does not prevent permission bypasslowCVSS 3.1EPSS 0.2%
- CVE-2025-61785: Deno's --deny-write check does not prevent permission bypasslowCVSS 3EPSS 0.2%
- CVE-2024-21486: Deno vulnerable to Exposure of Sensitive Information to an Unauthorized ActorlowCVSS 3.1
- CVE-2025-48934: Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variableslowCVSS 3.1EPSS 0.4%
- CVE-2025-48888: Deno run with --allow-read and --deny-read flags results in allowedlowCVSS 3.1EPSS 0.4%
- CVE-2025-24015: Deno's AES GCM authentication tags are not verifiedmediumCVSS 4EPSS 0.3%
- CVE-2025-48935: RUSTSEC-2025-0138 - --allow-read / --allow-write permission bypass in `node:sqlite`mediumCVSS 4EPSS 0.5%
- CVE-2025-21620: fetch: Authorization headers not dropped when redirecting cross-originlowCVSS 3EPSS 0.5%
- CVE-2024-34346: Deno permission escalation vulnerability via open of privileged files with missing `--deny` flaglowCVSS 3.1EPSS 0.4%
- CVE-2024-27934: *const c_void / ExternalPointer unsoundness leading to use-after-freelowCVSS 3.1EPSS 0.4%
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 8.1EPSS 0.4%
- CVE-2026-49440: Deno missing cryptographic rounds in node:crypto checkPrimehighCVSS 7.4EPSS 0.2%
- CVE-2026-44726: Deno cleartext transmission in Node.js TLS compatibility layerhighCVSS 7.4EPSS 0.2%
- CVE-2026-49401: Deno permission bypass via Unicode normalization mismatch on macOShighCVSS 7.3EPSS 0.2%
- 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 5.5EPSS 0.2%
- CVE-2026-49983: Deno environment permission bypass in process.loadEnvFilemediumCVSS 5.2EPSS 0.1%
- CVE-2026-49860: Deno sandbox bypass via missing post-DNS check in WebSocket APImediumCVSS 5.2EPSS 0.1%
- CVE-2026-49859: Deno network restriction bypass in fetch APImediumCVSS 5.2EPSS 0.1%
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 | 0 | 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 deno (crates.io) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/deno)<a href="https://junglewise.ai/threats/technologies/deno"><img src="https://junglewise.ai/threats/technologies/deno/badge.svg" alt="deno (crates.io) 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/technologies/deno.json, and this page as text at https://junglewise.ai/threats/technologies/deno.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, "deno (crates.io) vulnerabilities", https://junglewise.ai/threats/technologies/deno, 9 November 2026.