CVE-2026-111384 PUBLISHED

Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket

Assigner: VulnCheck
Reserved: 15.10.2026 Published: 16.10.2026 Updated: 16.10.2026

Nezha 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the dashboard file manager WebSocket endpoint because fmStream never calls SetReadLimit, leaving message size unbounded. Authenticated users with file manager scopes can send one oversized binary message to /api/v1/ws/file/:id, triggering an OOM kill that drops all agent monitoring.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	nezhahq
Product	nezha
Versions	Default: unaffected affected from 1.0.0 to 2.3.15 (excl.) Version 2.3.15 is unaffected

CVE-2026-111384 PUBLISHED

Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket

Metrics

Product Status

Credits

References

Problem Types