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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-55865

29
FAUCET Score

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.

First published: Jul 9, 2026Last modified: Jul 9, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Jg-RpLiquid
< 2.2.1CNA affected

CVSS Data

CVSS version used by this source: 4.0

7.1HIGH

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 5th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: python-liquidFixed in: 2.2.1

Vendor Advisories (1)

pipGHSA-vq2f-vcc9-j8mvmedium

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

Jun 19, 2026

References

github.com / jg-rp/liquid/commit/26db8931cf35e8433c1ca506fc32c3bb62f743d4
github.com / jg-rp/liquid/releases/tag/v2.2.1
github.com / jg-rp/liquid/security/advisories/GHSA-vq2f-vcc9-j8mv