CVE-2026-53527
LeafWiki Vulnerable to Privilege Escalation via User Self-Service Update
LeafWiki is a self-hosted wiki. Versions 0.1.0 through 0.10.0 have a privilege escalation vulnerability in the user update API. An authenticated user could update their own account role and escalate privileges from a regular user, such as `viewer`, to `admin`. Exploitation requires a valid authenticated LeafWiki user account. Instances without public registration and with only trusted users are at lower practical risk. Users should update to version 0.10.1 or greater. Until a patch is available, operators should restrict account creation and ensure that only trusted users have accounts on affected LeafWiki instances. If possible, access to the user update API should be restricted to trusted users or administrators only.
| CWE | CWE-269 |
| Vendor | perber |
| Product | leafwiki |
| Published | Aug 21, 2026 |
Get instant alerts for perber leafwiki
Be the first to know when new high vulnerabilities affecting perber leafwiki are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H