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CVE-2026-53527— LeafWiki Vulnerable to Privilege Escalation via User Self-Service Update

Quick assessment

Affected
perber leafwiki
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

perber leafwiki是perber个人开发者的一款文档管理工具。 perber leafwiki 0.1.0版本至0.10.0版本存在权限许可和访问控制问题漏洞，该漏洞源于用户更新API中的权限提升，可能导致已认证用户将自身角色从普通用户提升为管理员。

CVSS 8.8 · High EPSS 0.42% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
perber leafwiki >= 0.1.0, < 0.10.1 affected
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I. Basic Information for CVE-2026-53527

Vulnerability Information
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Vulnerability Title
LeafWiki Vulnerable to Privilege Escalation via User Self-Service Update
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
perber leafwiki 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
perber leafwiki是perber个人开发者的一款文档管理工具。 perber leafwiki 0.1.0版本至0.10.0版本存在权限许可和访问控制问题漏洞，该漏洞源于用户更新API中的权限提升，可能导致已认证用户将自身角色从普通用户提升为管理员。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
perber leafwiki >= 0.1.0, < 0.10.1 -

II. Public POCs for CVE-2026-53527

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8143 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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III. Intelligence Information for CVE-2026-53527

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Vendor Advisories for CVE-2026-53527 (1)

Same Patch Batch · perber · 2026-08-21 · 3 CVEs total

CVE-2026-53528 8.8 HIGH FileWiki has path traversal in RenameAsset via unsanitized oldFilename parameter
CVE-2026-53529 4.8 MEDIUM LeafWiki vulnerable to stored XSS via search-result title (highlight() returns raw title i

IV. Related Vulnerabilities

Same product: leafwiki
Same vendor: perber
Same weakness: CWE-269

V. Comments for CVE-2026-53527

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