CVE-2023-44270

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

September 29, 2023

Last Modified

June 17, 2026

References (9)

Vendor Advisories for CVE-2023-44270(13)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift-gitops-1/must-gather-rhel8:v1.14.3-42025-03-20redhat
redhatodf4/odf-multicluster-console-rhel9:v4.18.0-642025-03-11redhat
redhatodf4/odf-multicluster-console-rhel9:v4.14.16-22025-02-26redhat
redhatodf4/odf-multicluster-console-rhel9:v4.15.12-12025-02-26redhat
redhatodf4/odf-multicluster-console-rhel9:v4.17.5-22025-02-25redhat
redhatodf4/odf-multicluster-console-rhel9:v4.16.8-12025-02-25redhat
redhatdiscovery/discovery-ui-rhel9:1.12.0-12025-02-10redhat
redhatdevspaces/dashboard-rhel9:3.18-102025-02-03redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:v4.17.0-202501150934.p0.g0244dff.assembly.stream.el92025-01-28redhat
redhatopenshift-service-mesh/kiali-rhel8:1.73.17-12024-12-10redhat
redhatopenshift4/nmstate-console-plugin-rhel9:v4.17.0-202411261204.p0.gbc40e56.assembly.stream.el92024-12-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.2.1+~cs5.3.23-88.2.1+~cs5.3.23-8+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.4.20+~cs8.0.23-18.4.20+~cs8.0.23-1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-postcss—8.4.31+~cs8.0.26-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-postcss—8.4.31+~cs8.0.26-1—
npm(1)
PackageVulnerable rangeFixed inDependents
postcss—8.4.31—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 151 total refreshes for this CVE.

  1. 2026-08-25 13:46 UTCEPSS rescore
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-21 23:47 UTCEPSS rescore
  4. 2026-08-20 22:53 UTCEPSS rescore
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  7. 2026-08-18 13:46 UTCEPSS rescore
  8. 2026-08-17 13:45 UTCEPSS rescore
  9. 2026-08-17 06:57 UTCOSV refresh
  10. 2026-08-16 14:54 UTCEPSS rescore
  11. 2026-08-16 02:12 UTCEPSS rescore
  12. 2026-08-15 01:28 UTCEPSS rescore
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  1. 2026-08-02 02:25 UTCEPSS rescore
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  3. 2026-08-02 01:36 UTCOSV refresh
  4. 2026-08-01 04:14 UTCEPSS rescore
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  18. 2026-07-23 02:27 UTCEG score recompute
  19. 2026-07-22 23:13 UTCEG score recompute
  20. 2026-07-22 14:06 UTCEPSS rescore
  21. 2026-07-21 15:23 UTCEPSS rescore
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  23. 2026-07-20 17:06 UTCEPSS rescore
  24. 2026-07-19 14:29 UTCEPSS rescore
  25. 2026-07-19 02:27 UTCEPSS rescore
  26. 2026-07-18 10:03 UTCEPSS rescore
  27. 2026-07-18 10:03 UTCEPSS rescore
  28. 2026-07-16 17:01 UTCEPSS rescore
  29. 2026-07-16 17:01 UTCEPSS rescore
  30. 2026-07-15 16:56 UTCEPSS rescore
  31. 2026-07-15 16:56 UTCEPSS rescore
  32. 2026-07-15 08:49 UTCOSV refresh
  33. 2026-07-15 01:58 UTCEPSS rescore
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  40. 2026-07-11 08:26 UTCEPSS rescore
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  42. 2026-07-09 19:08 UTCEPSS rescore
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  48. 2026-07-05 02:29 UTCEPSS rescore
  49. 2026-07-04 06:29 UTCEPSS rescore
  50. 2026-07-01 15:05 UTCEPSS rescore
  51. 2026-06-30 23:21 UTCEPSS rescore
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  58. 2026-06-27 09:04 UTCOSV refresh
  59. 2026-06-27 03:07 UTCEPSS rescore
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  61. 2026-06-25 13:48 UTCEPSS rescore
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  73. 2026-06-19 19:24 UTCEPSS rescore
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  75. 2026-06-18 17:51 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-44270?
CVE-2023-44270 is a medium vulnerability published on September 29, 2023. 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…
When was CVE-2023-44270 disclosed?
CVE-2023-44270 was first published in the National Vulnerability Database on September 29, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-44270 actively exploited?
CVE-2023-44270 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 45.4% of all scored CVEs.
What is the CVSS score of CVE-2023-44270?
CVE-2023-44270 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2023-44270?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-44270, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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