PostCSS up to 8.4.30 Cascading Style Sheet injection

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in PostCSS up to 8.4.30. This affects an unknown function of the component Cascading Style Sheet Handler. Executing a manipulation can lead to an unknown weakness. This vulnerability is tracked as CVE-2023-44270. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in PostCSS up to 8.4.30 and classified as problematic. This vulnerability affects an unknown code block of the component Cascading Style Sheet Handler. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. The impact remains unknown. CVE summarizes:

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets (CSS). There may be \r discrepancies, as demonstrated by @font-face{ font:(\r/*);} in a rule.

The weakness was disclosed 09/30/2023 as 58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-44270 since 09/28/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1055.

The vulnerability scanner Nessus provides a plugin with the ID 213394 (Debian dla-4003 : node-postcss - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.4.31 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (213394) and EUVD (EUVD-2023-2456). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 213394
Nessus Name: Debian dla-4003 : node-postcss - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PostCSS 8.4.31
Patch: 58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5

Timelineinfo

09/28/2023 🔍
09/30/2023 +2 days 🔍
09/30/2023 +0 days 🔍
08/26/2025 +696 days 🔍

Sourcesinfo

Product: github.com

Advisory: 58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5
Status: Confirmed

CVE: CVE-2023-44270 (🔍)
GCVE (CVE): GCVE-0-2023-44270
GCVE (VulDB): GCVE-100-240952
EUVD: 🔍

Entryinfo

Created: 09/30/2023 08:26
Updated: 08/26/2025 14:51
Changes: 09/30/2023 08:26 (41), 10/22/2023 18:42 (11), 12/27/2024 05:01 (17), 08/26/2025 14:51 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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