CVE-2026-45182
Low · 2.2CVSS
2.2
EPSS
0.1%
Published
May 9, 2026
CISA due date
—
The record
GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the "Block connections without VPN" and "Always-on VPN" settings are enabled.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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