Security readout for executives and security teams
Plain-English summary
Deno’s security permissions could be bypassed in affected versions. Code loaded dynamically could bring in other modules in a way that skipped file-system and network permission checks. For organizations relying on Deno’s permission model to contain JavaScript or TypeScript workloads, this could undermine an important safety boundary.
Executive priority
Prioritize remediation where Deno is used to run semi-trusted code or enforce file and network boundaries. The vendor patch is available, and the business risk is highest where Deno permissions are treated as a security control.
Technical view
CVE-2021-32619 affects Deno 1.5.0 through 1.10.1, with affected metadata listing versions before 1.10.2. Dynamically imported modules via import() or new Worker might bypass network and file-system permission checks when they statically imported additional modules. The issue is classified as CWE-285 and patched in Deno 1.10.2.
Likely exposure
Exposure is limited to environments running vulnerable Deno versions, especially applications or tooling that depend on Deno permissions to restrict file or network access. Systems already upgraded to Deno 1.10.2 or later are not indicated as affected by the provided sources.
Exploitation context
The CVE has a CVSS 3.1 score of 9.8, but the provided bundle does not cite active exploitation, and KEV status is false. Treat exploitation evidence as incomplete rather than confirmed.
Researcher notes
The key security boundary is Deno permission enforcement during dynamic module loading. Sources describe a bypass involving static imports inside dynamically imported modules. No exploit proof, affected deployment prevalence, or post-patch technical detail is provided in the bundle.
Mitigation direction
- Upgrade Deno to version 1.10.2 or later.
- Inventory production, CI, and developer systems for affected Deno versions.
- Prioritize workloads that rely on Deno permissions for containment.
- Review the Deno GitHub advisory for vendor guidance.
Validation and detection
- Confirm deployed Deno runtimes are version 1.10.2 or later.
- Identify code paths using dynamic import or new Worker.
- Review dependencies and runtime images for bundled vulnerable Deno versions.
- Check affected-period logs for unexpected file or network access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-285: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-32619 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/denoland/deno/security/advisories/GHSA-xpwj-7v8q-mcgjCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.