CVE-2026-53527 (GCVE-0-2026-53527)

Vulnerability from cvelistv5 – Published: 2026-08-21 21:25 – Updated: 2026-08-24 18:48
VLAI
Title
LeafWiki Vulnerable to Privilege Escalation via User Self-Service Update
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 18:47 UTC
CWE
  • CWE-269 - Improper Privilege Management
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
perber leafwiki Affected: >= 0.1.0, < 0.10.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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