Unsafe Dependency Resolution Affecting css_parser package, versions <1.22.0>=2.0.0, <2.1.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUBY-CSSPARSER-16624712
- published10 May 2026
- disclosed7 May 2026
- creditJLLeitschuh
Introduced: 7 May 2026
NewCVE-2026-44312 (opens in a new tab)How to fix?
Upgrade css_parser to version 1.22.0, 2.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Unsafe Dependency Resolution due to improper validation of HTTPS certificates in the parser process. An attacker can inject or modify remote CSS content by performing a man-in-the-middle attack during stylesheet loading over HTTPS.