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Vulnerabilities CVE-2026-55865

CVE-2026-55865

High
Open
TLP:CLEAR

Python Liquid: Infinite loop when parsing malformed `{% case %}` tags

NVD CVE.org
Critical Infrastructure DDoS

AI Analysis

No AI analysis yet.

Description

Python Liquid is a Python engine for the Liquid template language. Prior to 2.2.1, given a malformed {% case %} tag without an associated {% when %} or {% else %} block and no terminating {% endcase %} tag, Python Liquid hangs in an infinite loop at parse time because liquid.TokenStream.eof did not give the EOF token matching kind and value fields, allowing malicious template authors to craft templates for a denial of service attack. This issue is fixed in version 2.2.1.

Details

CVSS Score
7.1
EPSS Score
0.26%

17.7th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 9, 2026
Last Modified
Jul 14, 2026
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