EUVD-2026-40453

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree AST security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module...

CVE-2026-56777 n8n - AST Validator Bypass in Python Code Node

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree AST security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module...

CVE-2026-56777

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree AST security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module...

CVE-2026-56777 n8n - AST Validator Bypass in Python Code Node

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree AST security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module...

PT-2026-54049

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree AST security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module...

CVE-2026-53753 Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.7, the safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT...

CVE-2026-53753 Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.7, the safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT...

PT-2026-61774

Name of the Vulnerable Software and Affected Versions praisonai-agents affected versions not specified Description The execute code tool contains a flaw in its subprocess sandbox that allows an arbitrary read primitive over blocklisted attributes. The issue arises from the combination of two...

GHSA-JWM3-QCFW-C5PP n8n: Python Code Node AST Validator Bypass

Impact An authenticated user with permission to create or modify workflows containing a Python Code node could bypass the AST security validator and access the task executor module namespace. On self-hosted instances where N8NBLOCKRUNNERENVACCESS=false is set, this extended to disclosure of...

Crawl4AI: AST Sandbox Escape via gi_frame.f_back Chain - Pre-Auth RCE in Docker API

The safeevalexpression function in the computed fields feature uses an AST validator that only blocks attributes starting with underscore. Python generator and frame object attributes giframe, fback, fbuiltins do NOT start with underscore, enabling a complete sandbox escape to achieve arbitrary...