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Fencer Vulns
high 7.5

CVE-2023-30583 json

fs.openAsBlob() can bypass the experimental permission model when using the file system read restriction with the `--allow-fs-read` flag in…

published 2024-09-07 2 y ago modified 2026-06-17 4 mo ago also BIT-node-2023-30583 , BIT-node-min-2023-30583 , EUVD-2023-34964

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

fs.openAsBlob() can bypass the experimental permission model when using the file system read restriction with the `--allow-fs-read` flag in Node.js 20. This flaw arises from a missing check in the `fs.openAsBlob()` API.

Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.

Patch / fix

  • bitnami node 20.3.1
  • bitnami node-min 20.3.1
  • NodeJS Node 20.3.1
  • nodejs nodejs 20.3.1
  • nodejs20 openSUSE Tumbleweed 20.3.1-1.1

opensuse advisories openSUSE-SU-2024:13021-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-30583 updated cvss 5.3

nodejs: fs.openAsBlob bypass in experimental permission model

  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat Enterprise Linux 9 npm, nodejs, nodejs-libs, nodejs-full-i18n Red Hat Software Collections rh-nodejs14-npm, rh-nodejs14-nodejs, rh-nodejs14-nodejs-full-i18n
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami node
>=20.0.0, <20.3.1
20.3.1
bitnami node-min
>=20.0.0, <20.3.1
20.3.1

Affected products

  • NodeJS Node
  • nodejs nodejs

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.