CVE-2026-62927
HIGH 8.7 ALL-YEARSIn Eclipse Milo versions 1.0.0 through 1.1.4, the Call service dispatches the original mixed batch to address-space handlers after calculating authorization, allowing an anonymous or otherwise low-privileged client to execute a denied method by batching it with an allowed method.
Severe if exploited (CVSS 8.7), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 36th percentile
Impact if exploited
8.7CVSS 4.0 · HIGH · CNA
- ConfidentialityNone
- IntegrityHigh
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Weakness (CWE)
- CWE-863: Incorrect authorization
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Eclipse | Milo | ≥ 1.0.0 and < 1.1.5 |
All CVSS metrics
- HIGH 8.7 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - HIGH 8.7 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - HIGH 7.5 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References
Patches & mitigations
- https://github.com/eclipse-milo/milo/commit/59b50bed094de0d18a130a48f3527254dc76105d CVE record · eclipse · Updated 2026-08-04T11:57:59.822Z
NVD · CVE-2026-62927 · Updated 2026-10-23T23:10:00.157 - https://gitlab.eclipse.org/security/cve-assignment/-/work_items/178 CVE record · eclipse · Updated 2026-08-04T11:57:59.822Z
NVD · CVE-2026-62927 · Updated 2026-10-23T23:10:00.157
Advisories
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598 CVE record · eclipse · Updated 2026-08-04T11:57:59.822Z
NVD · CVE-2026-62927 · Updated 2026-10-23T23:10:00.157 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-52661 EUVD · EUVD-2026-52661
Sources: NVD · CVE.org · All sources and attribution · EPSS