Security readout for executives and security teams
Plain-English summary
This issue affects old Deno releases where the file permission sandbox could be bypassed through symbolic link handling. If an organization used Deno’s write restrictions to contain less-trusted scripts, that boundary may not have held. The business risk is mainly unauthorized file-system access from code that was expected to stay confined.
Executive priority
Treat as a focused upgrade and exposure review item, not a broad emergency. Escalate if Deno ran untrusted scripts or enforced tenant, plugin, or automation isolation.
Technical view
Deno <=1.14.0 did not correctly handle symbolic links in its file sandbox. With specific write access, Deno.symlink could be used to gain access to directories outside the intended permission boundary. The supplied CVE data does not include CVSS, CWE, a confirmed fixed version, or detailed affected package metadata.
Likely exposure
Exposure is most likely where Deno <=1.14.0 ran scripts with constrained write permissions, especially automation, plugin, build, or user-supplied code relying on Deno’s sandbox for containment.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public references include a report and a Deno issue, but the provided data does not establish real-world exploitation.
Researcher notes
The supplied metadata is sparse: no CVSS, CWE, CPEs, or explicit patched version are included. Analysis should stay bounded to Deno <=1.14.0 and the documented symlink sandbox bypass behavior.
Mitigation direction
- Inventory Deno versions and prioritize any runtime at or below 1.14.0.
- Review Deno vendor guidance and release notes for the confirmed fix path.
- Avoid running untrusted code on affected Deno versions.
- Reduce filesystem permissions for affected workloads until upgraded.
- Review sandbox assumptions where Deno enforced operational boundaries.
Validation and detection
- Check deployed Deno runtime versions against the <=1.14.0 affected range.
- Identify workloads using Deno file write permissions as a security boundary.
- Review use of Deno.symlink or code paths that can create symbolic links.
- Confirm remediation using vendor guidance, not only dependency manifests.
- Look for unexpected filesystem access in affected Deno-hosted jobs.
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.
CVE-2021-41641 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://hackers.report/report/614876917a7b150012836bb8CVE reference · x_refsource_MISC
- https://github.com/denoland/deno/issues/12152CVE reference · x_refsource_MISC
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.