5.3

CVE-2023-44270: postcss

Modified
AliasesUBUNTU-CVE-2023-44270DEBIAN-CVE-2023-44270GHSA-7fh5-64p2-3v2j
Published 29-09-2023Last modified 03-11-2025

Vulnerability summary

CVE-2023-44270 is a medium (CVSS 5.3) vulnerability in postcss. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 62% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.97%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
DLA-4003-1OPENSUSE-SU-2025:14663-1CGA-C2W6-9Q88-7P2X

Timeline

  1. 29-09-2023
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.97%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.97% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard30 products
  • arangodb-3.11< 3.11.14.5-r1
  • arangodb-3.12< 3.12.9.4-r22
  • gitlab-rails-ce-18.1All versions (No fix recorded)
  • gitlab-rails-ce-18.10All versions (No fix recorded)
  • gitlab-rails-ce-18.11All versions (No fix recorded) | < 18.11.13-r0
Debian1 product
  • node-postcss< 8.4.20+~cs8.0.23-1+deb12u1 | < 8.4.31+~cs8.0.26-1
Npm1 product
  • postcss< 8.4.31
Postcss1 product
Ubuntu1 product
  • node-postcssAll versions (No fix recorded)

5 vendors · 34 products

References

10 links