CVE-2026-12209

A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src/filters/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/OriginSecurityX/avalon-filter-rce
https://vuldb.com/cve/CVE-2026-12209
https://vuldb.com/submit/832447
https://vuldb.com/vuln/370851
https://vuldb.com/vuln/370851/cti

Configurations

No configuration.

History

15 Jun 2026, 03:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-15 03:16

Updated : 2026-06-17 10:14

NVD link : CVE-2026-12209

Mitre link : CVE-2026-12209

CVE.ORG link : CVE-2026-12209

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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