CVE-2022-21222

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.90% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 79.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2022-09-30 05:05Z4 YR AGO

Last updated

2025-05-20 16:04Z1 YR AGO

Reserved

2022-02-24

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

6fbb2f36e9575048c4aa7a59d8e59ebf071370c984cf3ca45916e25aeafff7ff

• security.snyk.iohttps://security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488
• github.comhttps://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12
• lists.debian.org[debian-lts-announce] 20230303 [SECURITY] [DLA 3350-1] node-css-what security updatehttps://lists.debian.org/debian-lts-announce/2023/03/msg00001.htmlmailing-list