Low severity · published Oct 23, 2026
CVE-2026-106073
A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks
New
3.3
CVSS
0.2%
EPSS
No
On KEV
Description
A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks. This is an incomplete fix of CVE-2026-21715, which only covered `fs.realpathSync.native()`.
As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.
This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node · nodejs
22.23.3 through 22.23.3; 24.22.0 through 24.22.0; 26.12.0 through 26.12.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-106073
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-106073
nodejs.org
https://nodejs.org/en/blog/vulnerability/october-2026-security-releases
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