CVE-2021-23368

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

3.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-04-12 13:50Z5 YR AGO

Last updated

2024-09-16 17:27Z2 YR AGO

Reserved

2021-01-08

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

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

a3797d2fe46de2c0af34e09a86d02adf524ccee330cb3b43aeb7c930ca147100

• snyk.iohttps://snyk.io/vuln/SNYK-JS-POSTCSS-1090595x_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1244795x_refsource_MISC
• github.comhttps://github.com/postcss/postcss/commit/b6f3e4d5a8d7504d553267f80384373af3a3dec5x_refsource_MISC
• github.comhttps://github.com/postcss/postcss/commit/8682b1e4e328432ba692bed52326e84439cec9e4x_refsource_MISC
• lists.apache.org[myfaces-dev] 20210421 [GitHub] [myfaces-tobago] henningn opened a new pull request #774: build(postcss): update dependency to fix CVE-2021-23368https://lists.apache.org/thread.html/r16e295b4f02d81b79981237d602cb0b9e59709bafaa73ac98be7cef1%40%3Cdev.myfaces.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[myfaces-dev] 20210421 [GitHub] [myfaces-tobago] henningn merged pull request #774: build(postcss): update dependency to fix CVE-2021-23368https://lists.apache.org/thread.html/r8def971a66cf3e375178fbee752e1b04a812a047cc478ad292007e33%40%3Cdev.myfaces.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[myfaces-dev] 20210421 [GitHub] [myfaces-tobago] lofwyr14 opened a new pull request #775: Updating lib, to avoid CVE problem CVE-2021-23368 with postcsshttps://lists.apache.org/thread.html/r00158f5d770d75d0655c5eef1bdbc6150531606c8f8bcb778f0627be%40%3Cdev.myfaces.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[myfaces-commits] 20210421 [myfaces-tobago] branch master updated: Updating lib, to avoid CVE problem CVE-2021-23368 with postcsshttps://lists.apache.org/thread.html/r5acd89f3827ad9a9cad6d24ed93e377f7114867cd98cfba616c6e013%40%3Ccommits.myfaces.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[myfaces-commits] 20210421 [myfaces-tobago] branch master updated: build(postcss): update dependency to fix CVE-2021-23368https://lists.apache.org/thread.html/rad5af2044afb51668b1008b389ac815a28ecea9eb75ae2cab5a00ebb%40%3Ccommits.myfaces.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[myfaces-dev] 20210421 [GitHub] [myfaces-tobago] lofwyr14 merged pull request #775: Updating lib, to avoid CVE problem CVE-2021-23368 with postcsshttps://lists.apache.org/thread.html/r49afb49b38748897211b1f89c3a64dc27f9049474322b05715695aab%40%3Cdev.myfaces.apache.org%3Emailing-listx_refsource_MLIST