← Vulnerability feed

Vulnerability record · CVE-2026-53527 · published 21 August 2026

CVE-2026-53527: Improper privilege management vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.42% · top 66.5% CWE-269 · Improper privilege management Deferred
8.8CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
9 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/perber/leafwiki/security/advisories/GHSA-jj4r-587p-r5h5

Track CVE-2026-53527 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed9.8CVE-2026-46817Oracle E-Business Suite Payments missing authentication allows takeoverOracle Payments in Oracle E-Business Suite 12.2.3 through 12.2.15 contains an easily exploitable flaw in the File Transmission component. An unauthen…KEVEPSS 0.81%analysed7.8CVE-2026-21533Windows Remote Desktop improper privilege management allows local elevationWindows Remote Desktop contains an improper privilege management flaw (CWE-269) that lets an authorized attacker elevate privileges locally. It affec…KEVEPSS 4.1%analysed5.1CVE-2024-8068Citrix Session Recording privilege escalation to NetworkServiceCitrix Session Recording contains an improper privilege management flaw (CWE-269) that lets an authenticated attacker escalate to the NetworkService …KEVEPSS 3.5%analysed9.8CVE-2024-49035Microsoft Partner Center improper access control allows privilege elevationPartner.Microsoft.com contains an improper access control flaw (CWE-269) that lets an unauthenticated attacker elevate privileges over the network. M…KEVEPSS 1.3%analysed8.8CVE-2013-0643Adobe Flash Player Firefox sandbox privilege escalationAdobe Flash Player's Firefox sandbox does not properly restrict privileges, allowing crafted SWF content to escape the sandbox and run code with high…KEVEPSS 11%analysed7.8CVE-2024-38014Windows Installer Elevation of Privilege FlawCVE-2024-38014 is an elevation of privilege vulnerability in the Windows Installer, classified as improper privilege management (CWE-269). It affects…KEVEPSS 6.3%analysed7.8CVE-2024-26169Windows Error Reporting Service privilege escalation flawCVE-2024-26169 is an improper privilege management vulnerability in the Windows Error Reporting Service, classified under CWE-269. A local attacker w…KEVEPSS 4.0%analysed

Source: NIST National Vulnerability Database (record CVE-2026-53527), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.