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CVE-2025-6518

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Date: June 23, 2025

A vulnerability was found in PySpur-Dev pyspur up to 0.1.18. It has been classified as critical. Affected is the function SingleLLMCallNode of the file backend/pyspur/nodes/llm/single_llm_call.py of the component Jinja2 Template Handler. The manipulation of the argument user_message leads to improper neutralization of special elements used in a template engine. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Severity Score

Severity Score

Weakness Type (CWE)

Incomplete Filtering of Special Elements

CWE-791

Improper Neutralization of Special Elements Used in a Template Engine

CWE-1336

Top Fix

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Upgrade Version

Upgrade to version https://github.com/PySpur-Dev/pyspur.git - null

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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