What’s Vulnerable › Vulnerabilities

CVE-2026-77170

• Severity: medium (CVSS 4.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-18
• Weakness: CWE-284

Description

The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.

Affected products

• Nextcloud Deck: from 1.16.0 through 1.18.0

References

• https://hackerone.com/reports/3599383

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