CVE-2025-62820
Medium
Description
Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.
SeverityMedium
CVSS4.9
Exploit probability—
ProductGithub.com/slackhq/nebula
PublishedOct 23, 2025
First seenOct 23, 2025
Weakness typeCWE-420CWE-420
How to fix
Update
- github.com/slackhq/nebula1.9.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/slackhq/nebulaGo | 1.9.4 ≤ v < 1.9.7 | 1.9.7 |
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