Infinite loop Affecting python-liquid package, versions [,2.2.1)
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-PYTHON-PYTHONLIQUID-17458912
- published25 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
CVE-2026-55865 (opens in a new tab)How to fix?
Upgrade python-liquid to version 2.2.1 or higher.
Overview
python-liquid is an A Python engine for the Liquid template language.
Affected versions of this package are vulnerable to Infinite loop in the {% case %} tag parsing logic, caused by an incorrect definition of the EOF token's kind and value in the TokenStream.eof attribute. A user who can author or supply templates can hang the parser and cause a denial of service by providing a {% case %} tag that has no {% when %} or {% else %} branch and no terminating {% endcase %}. Exploitation requires the application to parse template source supplied by untrusted authors, and the hang occurs at parse time.