Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | Milo | >= 1.0.0, < 1.1.5 |
Related Weaknesses (CWE)
References
- https://github.com/eclipse-milo/milo/commit/587e35669f519b2d7f6d850a5f86ee5a76c3Patch
- https://github.com/eclipse-milo/milo/commit/5f3f6da2a5ea80682e1da7c58f7a1870b09dPatch
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/182Broken Link
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598Issue TrackingVendor Advisory
FAQ
What is CVE-2026-61387?
CVE-2026-61387 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. Deep...
How severe is CVE-2026-61387?
CVE-2026-61387 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-61387?
Check the references section above for vendor advisories and patch information. Affected products include: Eclipse Milo.