Vulnerability · Published Sep 24, 2025 · Assigned by GitHub_M
CVE-2025-59824Omni Wireguard SideroLink potential escape
Low 0.5
In plain English
A low-severity incorrect authorization in omni from siderolabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to version 0.48.0, Omni Wireguard SideroLink has the potential to escape. Omni and each Talos machine establish a peer-to-peer (P2P) SideroLink connection using WireGuard to mutually authenticate and authorize access. The WireGuard interface on Omni is configured to ensure that the source IP address of an incoming packet matches the IPv6 address assigned to the Talos peer. However, it performs no validation on the packet's destination address. The Talos end of the SideroLink connection cannot be considered a trusted environment. Workloads running on Kubernetes, especially those configured with host networking, could gain direct access to this link. Therefore, a malicious workload could theoretically send arbitrary packets over the SideroLink interface. This issue has been patched in version 0.48.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siderolabs/omni | 0.48.0 | GHSA-hqrf-67pm-wgfq |
| Go | github.com/siderolabs/omni | 0.48.0 | GO-2025-3979 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siderolabs | omni | < 0.48.0 |
Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U