CVE-2026-36176
High
Description
GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.
SeverityHigh
CVSS7.1
Exploit probability—
ProductGP5
PublishedJun 4, 2026
First seenJun 4, 2026
Weakness typeCWE-312CWE-312
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| GNCC GP5 | 7.1.76 | — |
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