CVE-2021-21366

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 70.9% of scored records. A rank, not a probability.

NVD base score

4.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-03-12 00:00Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Weaknesses

• CWE-115Misinterpretation of InputBase
• CWE-436Interpretation ConflictClass

Data version

5.1

Document digest

3eca5974a13a8b703721a9fa9c5289dd49050cf4c067b6a75342cbbd16a4410e

• github.comhttps://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv
• www.npmjs.comhttps://www.npmjs.com/package/xmldom
• github.comhttps://github.com/xmldom/xmldom/releases/tag/0.5.0
• github.comhttps://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135
• lists.debian.org[debian-lts-announce] 20230101 [SECURITY] [DLA 3260-1] node-xmldom security updatehttps://lists.debian.org/debian-lts-announce/2023/01/msg00000.htmlmailing-list