CVE-2026-45182 Information disclosure in GrapheneOS
Attackers can discover the real IP address of VPN users on GrapheneOS when specific VPN settings are enabled, compromising user privacy.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-45182?
CVE-2026-45182 is a low-severity vulnerability in GrapheneOS, published on 9 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-441
Which versions are affected by CVE-2026-45182?
How do I fix CVE-2026-45182?
No fix has been published for CVE-2026-45182 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45182 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45182 exists.
Sources
Also known as GHSA-47rq-88xv-gpxv.