PT-2026-39696 · Pypi · Liquido

0Xhunsecanalyst · Published 2026-05-11 · Updated 2026-06-03 · CVE-2026-45017

Positive Technologies (AI Summary)

CVSS v4.0

8.2

High

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Python Liquid versions prior to 2.2.0

Description The built-in FileSystemLoader and CachingFileSystemLoader do not prevent reading files outside their designated search paths when an absolute path is provided. This allows malicious template authors to load and render arbitrary files using the {% include %} and {% render %} tags, provided the targeted files contain valid Liquid markup and are readable by the application process.

Recommendations Update to version 2.2.0. As a temporary workaround, create a custom template loader by inheriting from FileSystemLoader and overriding the resolve path() function to ensure absolute paths and parent directory references are blocked.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-45017

ECHO-4C7E-D60C-E7B1

GHSA-8P4X-WR7X-3788

PYSEC-2026-192

Affected Products

Liquido

References · 8

• https://github.com/jg-rp/liquid/security/advisories/GHSA-8p4x-wr7x-3788 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-8p4x-wr7x-3788 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45017 · Security Note
• https://osv.dev/vulnerability/PYSEC-2026-192 · Vendor Advisory
• https://github.com/pypa/advisory-database/tree/main/vulns/python-liquid/PYSEC-2026-192.yaml · Note
• https://github.com/jg-rp/liquid · Note
• https://t.me/cveNotify/165748 · Telegram Post
• https://reddit.com/r/VulnMatter/comments/1ta7ffo/resumen_diario_de_vulnerabilidades_11052026 · Reddit Post