Incomplete Filtering of Special Elements Affecting pyblade package, versions [0.1.8, ]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-PYBLADE-15954311
- published9 Apr 2026
- disclosed5 Apr 2026
- creditUnknown
Introduced: 5 Apr 2026
NewCVE-2026-5559 (opens in a new tab)How to fix?
There is no fixed version for PyBlade.
Overview
PyBlade is a PyBlade is a lightweight template engine for Python, initially designed for Django. Inspired by Laravel's Blade and Livewire, it simplifies dynamic template creation with developer-friendly @-based directives and component support, all while prioritizing security.
Affected versions of this package are vulnerable to Incomplete Filtering of Special Elements in the _is_safe_ast function in sandbox.py, and eval() function in evaluator.py during AST validation. An attacker can execute arbitrary code and access sensitive information by injecting specially crafted input into the template engine.