CVE-2026-120338 Prefab UI Pyodide sandbox escape to host RCE

Prefab UI's Generative UI sandbox runs caller-supplied Python inside Pyodide, Python compiled to WebAssembly, in a Deno subprocess. The feature is documented as isolation for untrusted code, including LLM-written UI. From prefab-ui 0.14.0 through 0.20.2 the launcher starts Deno with unrestricted...

EUVD-2026-114859

Prefab UI's Generative UI sandbox runs caller-supplied Python inside Pyodide, Python compiled to WebAssembly, in a Deno subprocess. The feature is documented as isolation for untrusted code, including LLM-written UI. From prefab-ui 0.14.0 through 0.20.2 the launcher starts Deno with unrestricted...

CVE-2026-120338

The prefab-ui library (versions 0.14.0 through 0.20.2 ) contains a sandbox escape vulnerability in its Generative UI feature. The system executes caller-supplied Python code via Pyodide within a Deno subprocess. Because the launcher initializes Deno with unrestricted permissions (--allow-read , -...

PT-2026-134911

Name of the Vulnerable Software and Affected Versions prefab-ui versions 0.14.0 through 0.20.2 Description The Generative UI sandbox runs caller-supplied Python code within Pyodide inside a Deno subprocess. The launcher starts Deno with unrestricted --allow-read, --allow-write, and --allow-net...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102832 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102832 Source advisory: OSV:GHSA-JWRC-GM9J-263P...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102832 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102832 Source advisory: GHSA-JWRC-GM9J-263P...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102832 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102832 Source advisory: SNYK:PYTHON-JUPYTERLITECORE-20883328...

Arbitrary Code Injection

Overview flowise-components is a Flowiseai Components Affected versions of this package are vulnerable to Arbitrary Code Injection via validatePythonCodeForDataFrame in packages/components/src/pythonCodeValidator.ts, which uses a regex-based blocklist to sanitize LLM-generated Python code before...

Arbitrary Code Injection

Overview flowise is a Flowiseai Server Affected versions of this package are vulnerable to Arbitrary Code Injection via validatePythonCodeForDataFrame in packages/components/src/pythonCodeValidator.ts, which uses a regex-based blocklist to sanitize LLM-generated Python code before execution in...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102831 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102831 Source advisory: OSV:PYSEC-2026-4060...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102831 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102831 Source advisory: GHSA-6966-VJJ6-99XV...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102831 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102831 Source advisory: OSV:GHSA-6966-VJJ6-99XV...

jupyterlite-pyodide-kernel (>=0.7.0a0, <=0.7.2), jupyterlite-sphinx (>=0.22.0, <=0.22.1) +5 more potentially affected by CVE-2026-102831 via jupyterlite-core (>=0.7.6, <=0.8.0rc0)

jupyterlite-core PYPI version =0.7.6, =0.7.0a0, =0.22.0, =1.0.1, =4.2.0, =0.3.0, =0.6.0, =0.10.0a0, =0.10.0 Source cves: CVE-2026-102831 Source advisory: MEND:CVE-2026-102831...

VulnCheck KEV: CVE-2026-69255

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split','.pop and interpolated it directly into executable Python as...

CVE-2026-73486

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to...

CVE-2026-73485

Flowise before 3.1.3 contains a code injection vulnerability in the Airtable Agent node that allows unauthenticated attackers to execute arbitrary Python code by bypassing the pythonCodeValidator blocklist through obfuscation techniques. Attackers can send crafted prompts to a chatflow using the...

CVE-2026-73486

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to...

CVE-2026-73486 Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to...

CVE-2026-73486 Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to...

CVE-2026-73486 Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV

Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to...