No exploitation reportedFix available

CVE-2021-44531

Q: Is CVE-2021-44531 actively exploited?

Active exploitation of CVE-2021-44531 has not been confirmed. Its EPSS score was 8.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-44531?

CVE-2021-44531 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

No exploitation reported by the sources we read.

Published2022-02-24
Fixed in17.3.1 · 16.13.2 · 14.18.3 · 12.22.9
WeaknessCWE-295

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI is specifically defined to use a particular SAN type, can result in bypassing name-constrained intermediates. Node.js < 12.22.9, < 14.18.3, < 16.13.2, and < 17.3.1 was accepting URI SAN types, which PKIs are often not defined to use. Additionally, when a protocol allows URI SANs, Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.

Timeline

dates in UTC

2022-02-2419:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-44531?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-44531?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Node.js

Branch	Affected	Fixed in	Source
17.x	≥ 17.0.0, < 17.3.1	17.3.1	NVD
16.x	≥ 16.0.0, < 16.13.2	16.13.2	NVD
14.x	≥ 14.0.0, < 14.18.3	14.18.3	NVD
12.22	< 12.22.9	12.22.9	NVD

Oracle graalvm

Branch	Affected	Fixed in	Source
20.3	= 20.3.5	no fix published	NVD
21.3	= 21.3.1	no fix published	NVD
22.0	= 22.0.0.2	no fix published	NVD

Oracle mysql server

Branch	Affected	Fixed in	Source
5.7	≤ 5.7.37	no fix published	NVD
8.0	≥ 8.0.0, ≤ 8.0.28	no fix published	NVD

5 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

RHSA-2023:3742 Red Hat Product Security4 products fixed
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.13.0 security and bug fix update

Full record on NVD

Fix

Update Node.js to 17.3.1 · 16.13.2 · 14.18.3 · 12.22.9
Vendor fix Red Hat Product Security RHSA-2023:3742 · 4 productsThese updated images include numerous enhancements and bug fixes. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat OpenShift Data Foundation Release Notes for information on the most significant of these changes: https://access.redhat.com/documen…

Advisories and patches

hackerone.comMitigation · Patch
nodejs.orgRelease Notes · Vendor Advisory
www.oracle.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.4read 2026-10-23
NVDCVSS 2.05.8read 2026-10-23
CNAweakness (CWE)CWE-295read 2026-10-23
NVDweakness (CWE)CWE-295read 2026-10-23
FIRST EPSSEPSS score8.4 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: 2022-02-24
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-44531?

Is CVE-2021-44531 actively exploited?

Active exploitation of CVE-2021-44531 has not been confirmed. Its EPSS score was 8.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-44531?

CVE-2021-44531 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

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