CVE-2021-44906

Exp

Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).

Published: 2022-03-17 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-44906 is rated High Exploit Risk (89.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 4.58%, 90th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.79% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-44906

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-44906

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.79% 4.58% +3.79%
2 2026-05-22 0.88% 0.79% -0.09%
3 2026-03-11 — 0.88% —

Full EPSS history (48 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-44906

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2021-44906

GitHub Security Advisory for CVE-2021-44906

GHSA-xvch-5gv4-984h · Severity: critical · Ecosystem: npm — Prototype Pollution in minimist

OS Trackers for CVE-2021-44906

vendor priority summary link
debian not yet assigned CVE-2021-44906 not yet assigned priority: Debian including 1 source packages (node-minimist), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-44906
redhat medium — https://access.redhat.com/security/cve/CVE-2021-44906
suse medium CVE-2021-44906 severity moderate: SUSE including 327 source package names (12-15.7:nodejs12-12.22.12-150200.4.32.1, 12-15.7:npm12-12.22.12-150200.4.32.1, …), 732 product×package rows across 49 product lines (Container bci/nodejs, Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure, … (49 product lines)): Fixed 468, Known Affected 231, Known Not Affected 33. https://www.suse.com/security/cve/CVE-2021-44906/
ubuntu medium CVE-2021-44906 medium priority: Ubuntu including 1 source packages (node-minimist), 14 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 7, needs-triage 7. https://ubuntu.com/security/CVE-2021-44906

Affected software / configurations for CVE-2021-44906

Vendor Product Version Raw CPE
substack minimist < 1.2.6 cpe:2.3:a:substack:minimist:*:*:*:*:*:node.js:*:*

References for CVE-2021-44906

cvelogic Threat Intelligence