SecuriTricks - CVE-2025-6518

Description

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.

Product(s) Impacted

Vendor	Product	Versions
Pyspur-dev	Pyspur	<0.1.18

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-791

Incomplete Filtering of Special Elements

The product receives data from an upstream component, but does not completely filter special elements before sending it to a downstream component.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	pyspur-dev	pyspur	<0.1.18	/	/	/	/	/	/	/

References

https://github.com/PySpur-Dev/pyspur/issues/289

https://vuldb.com/?ctiid.313638

https://vuldb.com/?id.313638

https://vuldb.com/?submit.593612

CVSS Score

5.3 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: LOW
User Interaction: NONE
Scope:
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: LOW
Exploit Maturity: PROOF_OF_CONCEPT

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: June 23, 2025, 7:15 p.m.
Last Modified: June 23, 2025, 8:16 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

cna@vuldb.com

CVE-2025-6518