CVE-2025-6518

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.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/PySpur-Dev/pyspur/issues/289
https://vuldb.com/?ctiid.313638
https://vuldb.com/?id.313638
https://vuldb.com/?submit.593612

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) Se encontró una vulnerabilidad en PySpur-Dev pyspur (hasta la versión 0.1.18). Se ha clasificado como crítica. La función SingleLLMCallNode del archivo backend/pyspur/nodes/llm/single_llm_call.py del componente Jinja2 Template Handler se ve afectada. La manipulación del argumento user_message provoca la neutralización incorrecta de elementos especiales utilizados en un motor de plantillas. Es posible ejecutar el ataque de forma remota. Se ha hecho público el exploit y puede que sea utilizado.

23 Jun 2025, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-23 19:15

Updated : 2026-04-29 01:00

NVD link : CVE-2025-6518

Mitre link : CVE-2025-6518

CVE.ORG link : CVE-2025-6518

JSON object : View

Products Affected

No product.

CWE

CWE-791

Incomplete Filtering of Special Elements

CWE-1336

Improper Neutralization of Special Elements Used in a Template Engine

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