CVE-2023-48631: Denial of Service of regular expression in package @adobe/css-tools

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-14 · updated 2026-06-17
Weakness: CWE-20

Description

@adobe/css-tools versions 4.3.1 and earlier are affected by an Improper Input Validation vulnerability that could result in a denial of service while attempting to parse CSS.

Affected products

Adobe Css-Tools: before 4.3.2 — fixed in 4.3.2

How to fix

Upgrade to a fixed version: Adobe Css-Tools 4.3.2. Check the vendor advisory for mitigations.

References

https://github.com/adobe/css-tools/security/advisories/GHSA-prr3-c3m5-p7q2
https://github.com/adobe/css-tools/security/advisories/GHSA-prr3-c3m5-p7q2

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