Authorization Bypass Through User-Controlled Key Affecting code.vikunja.io/api/pkg/models package, versions <2.2.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published31 Mar 2026
- disclosed26 Mar 2026
- creditoffset
Introduced: 26 Mar 2026
CVE-2026-56765 Â (opens in a new tab)How to fix?
Upgrade code.vikunja.io/api/pkg/models to version 2.2.1 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key through the improper enforcement of access controls in the ReadAll and GetTaskAttachment processes. An attacker can gain unauthorized access to and delete file attachments across all projects by chaining the exposure of share hashes with insufficient validation of attachment ownership. This is only exploitable if a link share URL is available to the attacker.