Sandbox bypass leading to arbitrary code execution in Deno
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269 and CWE-863.
Summary
Deno is a runtime for JavaScript and TypeScript. The versions of Deno between release 1.18.0 and 1.20.2 (inclusive) are vulnerable to an attack where a malicious actor controlling the code executed in a Deno runtime could bypass all permission checks and execute arbitrary shell code. This vulnerability does not affect users of Deno Deploy. The vulnerability has been patched in Deno 1.20.3. There is no workaround. All users are recommended to upgrade to 1.20.3 immediately.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| denoland | deno | 1.18.0 to before 1.20.3 | 1.20.3 | Patch available | CNA |
| — | deno (crates.io) | 1.18.0 to before 1.20.3 | 1.20.3 | Patch available | GHSA-838h-jqp6-cf2f |
- deno Vendordenoland Affected 1.18.0 to before 1.20.3 Fixed in 1.20.3 Patch available CNA
- deno (crates.io) Vendor— Affected 1.18.0 to before 1.20.3 Fixed in 1.20.3 Patch available GHSA-838h-jqp6-cf2f
Remediation
- Fix · CNA deno (denoland) Fixed in 1.20.3
- Fix · GHSA-838h-jqp6-cf2f deno (crates.io) Fixed in 1.20.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-24783
- 2026-10-03 Alias added: GHSA-838h-jqp6-cf2f
References
Advisory 2
More denoland Deno vulnerabilities
- TI-2026-21627 Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_process CVSS 3.1CRITICAL 9.8
- TI-2025-17782 Deno's AES GCM authentication tags are not verified CVSS 4.0HIGH 7.7
- TI-2024-18537 *const c_void / ExternalPointer unsoundness leading to use-after-free CVSS 3.1HIGH 8.8
- TI-2024-18536 Deno arbitrary file descriptor close via `op_node_ipc_pipe()` leading to permission prompt bypass CVSS 3.1HIGH 8.8
- TI-2023-12990 Deno is vulnerable to interactive `run` permission prompt spoofing via improper ANSI neutralization CVSS 3.1HIGH 8.8
- TI-2023-11328 Regular expression denial of service in deno CVSS 3.1HIGH 7.5
Sources
- CVE-2022-24783 · CVE Program
- CVE-2022-24783 · NVD
- FIRST EPSS
- GHSA-838h-jqp6-cf2f · GitHub Advisory Database · CC BY 4.0
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