CVE-2026-61387
Description
In Eclipse Milo versions 1.0.0 through 1.1.4, monitored-item quota accounting is not exception-safe: if item creation fails with an unchecked error, the server-global reservation is not restored. Deeply nested PubSub ExtensionObjects in a `CreateMonitoredItems` event filter can trigger a `StackOverflowError` during decoding, allowing an unauthenticated remote client to exhaust a finite global monitored-item quota and prevent all clients from creating new monitored items until restart. Existing monitored items and other server functions remain unaffected.
How to fix
- eclipse milo1.1.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eclipse milo | 1.0.0 ≤ v < 1.1.5 | 1.1.5 |
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