Privilege Escalation Vulnerability in LeafWiki by Perber
CVE-2026-53527

8.8HIGH

Key Information:

Vendor

Perber

Status
Leafwiki
Vendor
CVE Published:
21 August 2026

What is CVE-2026-53527?

LeafWiki versions 0.1.0 through 0.10.0 contain a vulnerability that allows authenticated users to escalate their privileges via the user update API. This flaw enables a regular user, such as a 'viewer', to modify their own account role to 'admin'. To safeguard against this vulnerability, it is advised that users upgrade to version 0.10.1 or later. In the interim, operators should consider restricting account creation to trusted individuals and limiting access to the user update API.

Affected Version(s)

leafwiki >= 0.1.0, < 0.10.1

References

https://github.com/perber/leafwiki/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.