3.3

CVE-2026-21716: nodejs node Missing Authorization

Analyzed
AliasesALPINE-CVE-2026-21716UBUNTU-CVE-2026-21716DEBIAN-CVE-2026-21716
Published 30-03-2026Last modified 31-03-2026

Vulnerability summary

CVE-2026-21716 is a low (CVSS 3.3) Missing Authorization vulnerability in nodejs node. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
3.3/10
010
Low · v3.0 (CVE.org)
EPSS score
0.14%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 20 · Related 12
DSA-6183-1MGASA-2026-0071OPENSUSE-SU-2026:10504-1OPENSUSE-SU-2026:11110-1OPENSUSE-SU-2026:20519-1OPENSUSE-SU-2026:21058-1

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 31-03-2026
    Last modifiedVulnerability information updated.

Description

An incomplete fix for CVE-2024-36137 leaves `FileHandle.chmod()` and `FileHandle.chown()` in the promises API without the required permission checks, while their callback-based equivalents (`fs.fchmod()`, `fs.fchown()`) were correctly patched. As a result, code running under `--permission` with restricted `--allow-fs-write` can still use promise-based `FileHandle` methods to modify file permissions and ownership on already-open file descriptors, bypassing the intended write restrictions. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard7 products
  • eco-nodejs-20.9.0All versions (No fix recorded)
  • eco-nodejs-22.16.0All versions (No fix recorded)
  • nodejs-16All versions (No fix recorded)
  • nodejs-18All versions (No fix recorded)
  • nodejs-21All versions (No fix recorded)
Wolfi5 products
  • nodejs-16All versions (No fix recorded)
  • nodejs-18All versions (No fix recorded)
  • nodejs-21All versions (No fix recorded)
  • nodejs-22< 22.22.3-r0
  • nodejs-23All versions (No fix recorded)
Nodejs2 products
  • node20.20.1 | 22.22.1 | 24.14.0 | 25.8.1
  • node.js≤ 20.20.1 | ≥ 22.0.0, ≤ 22.22.1 | ≥ 24.0.0, ≤ 24.14.0 | ≥ 25.0.0, ≤ 25.8.1
Alpine1 product
  • nodejs< 22.22.2-r0 | < 24.14.1-r0
Debian1 product
  • nodejs< 20.19.2+dfsg-1+deb13u2 | < 22.22.2+dfsg+~cs22.19.15-1
Ubuntu1 product
  • nodejsAll versions (No fix recorded)

6 vendors · 17 products

References

8 links