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Home/Vulnerability/CVE-2026-12209

CVE-2026-12209

RubyLouvre avalon Template Filter index.js prototype pollution

Published: Jun 15, 2026Updated: Jun 15, 2026 Sources: CVE List NVD
NVD MITRE
5.3CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-94CWE-1321

Affected Products

avalon
RubyLouvre

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/vuln/370851
vuldb.com
https://vuldb.com/vuln/370851/cti
vuldb.com
https://vuldb.com/cve/CVE-2026-12209
vuldb.com
and 2 more references View all →

Timeline

Published
Jun 15, 2026
Last Updated
Jun 15, 2026

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