What is CVE-2021-41641?

CVE-2021-41641 is a high-severity vulnerability in Deno, classified under Improper Link Resolution Before File Access. CVSS score: 8.4/10. Published 2022-06-12.

How severe is CVE-2021-41641?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Deno

CVE-2021-41641

Deno <=1.14.0 file sandbox does not handle symbolic links correctly. When running Deno with specific write access, the Deno.symlink method can be used to gain access to any directory.

Published 2022-06-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Deno

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

hackers.report/report/614876917a7b150012836bb8 (Exploit, Third Party Advisory)
github.com/denoland/deno/issues/12152 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-41641?: CVE-2021-41641 is a high-severity vulnerability in Deno, classified under Improper Link Resolution Before File Access. CVSS score: 8.4/10. Published 2022-06-12.
How severe is CVE-2021-41641?: High severity. CVSS v3 base score is 8.4 out of 10.